Scheudule D - Maintaining Traffic Typicals.pdf

Maintenance Division April 2007

MDOT

Michigan Department of Transportation

SLOWSTOP

ROAD

WORK

AHEAD

SPEED

LIMIT

Maintenance Work Zone

Traffic Control Guidelines

Work Zone Traffic Control 2007.doc i

Table of Contents

Introduction

Traffic Control Plans

General Signing Guidelines

Warning Signs

Sign Spacing – “D” Distances

Tapers – “L” Lengths

Cone and Drum Spacing for Channelization

Buffer Space

Shadow Vehicle

Truck Mounted Attenuators (TMAs)

Arrow Panels

Partial Lane Closures

Mobile Operations

Definitions

Section 6G.02 Work Duration (MI) Long-Term Stationary Work Intermediate-Term Stationary Work Short-Term Stationary Work Short-Duration Work Mobile Operations

Work Zone Defined

Appendix A Traffic Control Typicals .................................................................................................... A1 - A49

Appendix B Guidelines for Truck Mounted Attenuator Used by Maintenance Forces Working on MDOT Projects..........................................................................................................................................B1

Examples of TMA application......................................................................................................B1

Equipment Requirements..............................................................................................................B1

TMA........................................................................................................................................B1 Vehicle ....................................................................................................................................B1

Operation and Placement of TMAs ..............................................................................................B2

Operation.................................................................................................................................B2 Placement................................................................................................................................B2 ii

List of Traffic Control Typicals

Use of Lighted Arrow ................................................................................................................. A1 Work Outside Shoulder ....................................................................................................................... A2 Work on Shoulder

Two-Lane, Two-Way Roadway (No Speed Reduction)......................................................................................................... A3 & A4 (10 MPH Speed Reduction) ................................................................................................ A5 & A6

Divided Roadway or Freeway (No Speed Reduction)......................................................................................................... A7 & A8 (10 MPH Speed Reduction) .............................................................................................. A9 & A10

Work in Lane Lane Closure on a Two-Lane, Two-Way Roadway

Utilizing Traffic Regulator ...................................................................................... A11 & A12 Utilizing Temporary Traffic Signal ............................................................................................ A13

Lane Closure on an Undivided Multi-Lane Roadway (No Speed Reduction)..................................................................................................... A14 & A15 (10 MPH Speed Reduction) ............................................................................................ A16 & A17

Closure of Center Two Lanes of a Multi-Lane Undivided Roadway (No Speed Reduction)..................................................................................................... A18 & A19 (10 MPH Speed Reduction) ........................................................................................... A20 & A21

Closure of Center and One Adjacent Through Lane of a Multi-Lane Undivided Roadway (No Speed Reduction)..................................................................................................... A22 & A23 (10 MPH Speed Reduction) ............................................................................................ A24 & A25

Closure of Center and Two Adjacent Through Lanes of a Multi-Lane Undivided Roadway (No Speed Reduction).................................................................................................... A26 & A27 (10 MPH Speed Reduction) ........................................................................................... A28 & A29

Single Lane Closure on a Freeway (10 MPH Step Down in Speed) ..................................................................................... A30 & A31 (10 MPH Step Down with Where Workers Present) ..................................................... A32 & A33 (10 MPH Step Down with Where Workers Present Long-Term Stationary) ............................ A34

Two Lane Closure on Freeway............................................................................................. A35 Work around Ramps

Single Lane Freeway Closure through Exit Ramp Area ................................................................... A36 Single Lane Freeway Closure through Entrance Ramp Area............................................................ A37 Work Operations on Exit Ramp ........................................................................................................ A38

Mobile Operations Shoulder Work w/ Low Traffic Volumes and Adequate Sight Distances......................................... A39 Shoulder Work on Divided Roadway or Freeway............................................................................. A40 Lane Closure on Multi-lane Roadway w/ Curbs ............................................................................... A41 Lane Closure on Two-Lane Roadway............................................................................................... A42 Lane Closure on Multi-Lane Roadway ............................................................................................. A43 Urban Freeway Operation ................................................................................................................. A44 Moving Lane Closure on Two-Lane Roadway ................................................................................. A45

Miscellaneous Temporary Sign Covering (Example) ............................................................................................... A46 “B”, “D” and “L” Tables ................................................................................................................... A47

Workzone Signing Sequence and Setup................................................................................ A48 & A49 WWP Signing Treatment for Two Way and Limited Access Roadways.............................. A50 & A51

1 Work Zone Traffic Control 2007.doc

Introduction Temporary signing is a very important part of any maintenance operation. The purpose of this guidance document is to provide guidance for the placement of temporary signing in maintenance work zones.

If in the use of these guidelines you have questions or come across items that should be included or need modification contact the Region Support Unit of the Maintenance Division at 517-322-3300.

Traffic Control Plans Traffic control plans typical to most maintenance operations are shown in Appendix A. These standard plans should be used as guidelines for the layout of traffic control devices within work zones. Certain job and traffic conditions may warrant modification of these plans or the use of traffic control measures not shown within these guidelines. If there is a need to modify one of these guides, please contact your local TSC or Region traffic representative for assistance.

General Signing Guidelines All traffic control devices in work zones must be crashworthy. The requirements and criteria can be found in the National Cooperative Highway Research Program (NCHRP), Report 350.

It is required that Part 6 of the MMUTCD be followed to ensure that the signs used in work zones meet current standards.

For closures in non-pedestrian areas a five (5) foot minimum bottom height is required and driven posts are suggested for long term closures. In pedestrian areas a seven (7) foot minimum bottom height is required.

For visibility, signs should be placed within six (6) to twelve (12) feet of the edge of the traveled lane or no closer than two (2) feet to the back of curb.

Existing permanent signing in the work zone which conflicts with temporary signs shall be covered during the work operation. Sign covers shall be removed when the work operation ceases. Signs should be covered so that the reflective material is not damaged. One example of how to cover a sign is given on page A46.

Temporary signing shall be covered or removed when the work operation ceases (this is the source of most signing complaints). If a work zone is left unattended for any reason, all reduced speed signs, less than 60 mph, shall be removed, covered or laid down with legs off, unless it is determined that a lower speed limit must remain in place to maintain work zone safety/integrity.

It is recommended that drums be used in long-term stationary and intermediate-term stationary work zones, instead of cones. Cones and drums should not be inter-mixed within the work zones.

END ROAD WORK (G20-2) signs shall be used in all cases if the duration of a work zone is long-term stationary and intermediate-term stationary.

It is important that the work zone be driven on a daily basis to ensure that the motorist will not be confused by the signing sequence, drums or cones and that all lighted arrows are aimed correctly.

2 Work Zone Traffic Control 2007.doc

Warning Signs

• The minimum size of all diamond shaped warning signs is 48" x 48".

• Reflectorized signing is required.

• All warning signs may be equipped with an orange or day-glo flag mounted above the sign.

• Type A warning lights will not be required with the use of roll-up signs.

• The “advance signing sequence” consists of three signs; ROAD WORK AHEAD (W20-1), INJURE/KILL WORKER (R5-18b) and TRAFFIC FINES DOUBLED (R5-18). Refer to pages A48 & A49 for proper signing sequence.

Sign Spacing – “D” Distances The spacing between signs is based upon the permanently posted roadway speed. The sign spacing distances are minimums and may be adjusted to meet changing roadway and traffic conditions.

Table 1. Sign Spacing ("D" Distances)

Speed* (mph)

“D” Distance (ft.)

Speed* (mph)

“D” Distance (ft.)

25 250 50 500 30 300 55 550 35 350 60 600 40 400 65 650 45 450 70 700

*Posted speed prior to work zone

Tapers – “L” Lengths Whenever tapers are to be used near interchange ramps, crossroads, curves, or other influencing factors, it may be necessary to adjust the length of tapers, or extend the tangent section of the lane closure so the taper can be established in advance of these factors. Recommended minimum values for taper lengths, “L”, are shown in Table 2.

Table 2. Taper Lengths

Posted Speed Limit, mph (Prior to Work Zone) Taper Length, L

(ft) 25 30 35 40 45 50 55 60 65 70 8 83 120 163 213 360 400 440 480 520 560

9 94 135 184 240 405 450 495 540 585 630

10 104 150 204 267 450 500 550 600 650 700

11 115 165 225 293 495 550 605 660 715 770

12 125 180 245 320 540 600 660 720 780 840

13 135 195 266 347 585 650 715 780 845 910

14 146 210 286 374 630 700 770 840 910 980

O ffs et

La ne

W id th

(ft

15 157 225 307 400 675 750 825 900 975 1050

3 Work Zone Traffic Control 2007.doc

Cone and Drum Spacing for Channelization Spacing of channelizing devices, in feet, along the taper should not exceed the posted speed in miles per hour and twice the posted speed in the parallel area (e.g., a 45 mph posted speed road should normally have devices spaced no greater than 45 ft apart along the taper and 90 ft in the parallel section). Cones or drums on a tangent, to keep traffic out of the closed lane, should be spaced in accordance with the extent and type of activity, the speed limit of the roadway, and the vertical and horizontal alignment of the roadway.

Buffer Space Buffer Space is a feature that separates traffic flow from the work activity. No equipment, materials or vehicles shall be stored in the buffer space. The shadow vehicle, if used, must be placed beyond the longitudinal buffer space.

Table 3. Buffer Space Length for Posted Speeds

Speed* (mph)

Buffer Length (ft)

Speed* (mph)

Buffer Length (ft)

20 33 50 279 25 50 55 329 30 83 60 411 35 132 65 476 40 181 70 542 45 230

*Posted speed prior to work zone

Shadow Vehicle A shadow vehicle should be used for lane closures on all roadways which have 45 mph or greater posted speeds and two or more lanes in each direction.

A shadow vehicle may be used in other work zones as deemed necessary. Factors to be considered in determining need include the following:

• Time of day of the closure

• Seasonal variations in traffic volume

• Length of lane closure and anticipated duration

• Traffic speeds

• Frequency of traffic stopping/turning movements

The shadow vehicle should be a loaded truck having 23,000 GVWR or greater with the brakes set, front wheels turned away from traffic and parked at the beginning of the roll-ahead space.

The roll-ahead space is the space between the shadow vehicle and the work area. This additional space is needed only when a shadow vehicle is used.

4 Work Zone Traffic Control 2007.doc

Table 4. Guidelines for Roll-Ahead Distances for Shadow Vehicles

Type of Activity

Prevailing Speed (Posted Speed Prior to Work

Zone)

Weight of Shadow Vehicle

Roll-Ahead Distance

(Distance From Front of Shadow Vehicle to Work

Area)

45 mph 100 ft

50-55 mph 150 ft

Mobile

60-70 mph

5 Tons

175 ft

40 or Less 5.5 Tons 25 ft

45 mph 25 ft

50-55 mph 25 ft

Stationary

60-70 mph

12 Tons

50 ft

Truck Mounted Attenuators (TMAs) It is the department’s goal that a TMA be used anytime a shadow vehicle is deemed necessary. See Appendix B for detailed information.

Arrow Panels The Michigan Manual of Uniform Traffic Control Devices, states: "For stationary lane closure, the arrow panel should be located on the shoulder at the beginning of the merging taper. Where the shoulder is narrow, the arrow panel should be located in the closed lane."

Table 5. Arrow Display Types and Requirements

Panel Type Minimum Size (in)

Min. Legibility Distance

(miles)

Minimum Number of Lighted Elements

A 48 x 24 ½ 12 B 60 x 30 ¾ 13 C 96 x 48 1 15 D None* ½ 12

*Length of arrow equals 48in., width of arrowhead equals 24 in.

Type A arrow displays are appropriate for use on low-speed urban streets. Type B are appropriate for intermediate-speed facilities and for maintenance or mobile operations on high-speed roadways.

Type C arrow displays are intended to be used on high-speed, high-volume traffic control projects.

Type D arrow panels are intended for use on authorized vehicles. A Type D arrow panel shall conform to the shape of the arrow.

An arrow display shall not be used on a two-lane, two-way roadway in the arrow mode. The panel shall display the caution mode (bar mode) when used on these roadways.

5 Work Zone Traffic Control 2007.doc

When maintaining a standard lane closure (page A30), a Type C arrow panel should be used. When maintaining a standard lane closure with traffic regulators (page A11), the arrow for the closed lane should be a Type C arrow. The arrow used for the active lane should be either a Type B or Type C.

See page (A1) for correct alignment of arrow bars.

Partial Lane Closures Partial lane closures should be avoided. If any part of the lane is to be occupied, the whole lane should be closed. If the work within a closure moves more than two (2) miles from the original signing sequence, a new signing sequence should be set and the original set removed.

Mobile Operations The following activities are considered to be mobile operations, any activities not included in Table 6 below should not use mobile traffic control.

Table 6. Mobile Maintenance Activities

Activity Description Work location

13200 Approach Sweeping Intersections

13400 Expressway Patrol Shoulder, and minor non-vehicular encroachment in traveled way

13500 Freeway Lighting Shoulder and/or occupy a lane

13600 Curb Sweeping Occupy lane, continuously mobile ≈ 5 mph

12200 Catch Basin Clean-out Occupy lane

12400 Litter Pickup Shoulder and outside shoulder

17200 Vegetation Control Shoulder

11100 Routine Blading Shoulder and minor non-vehicular encroachment in traveled way

11200 Gravel Shoulder Maintenance

Shoulder and minor non-vehicular encroachment in traveled way

11400 Shoulder Spot Seal Patching (kettle)

Shoulder, edge of metal

11400 Shoulder Bituminous Patching

Shoulder, edge of metal

10300 Patrol Patching Drive on shoulder and minor non-vehicular encroachment in traveled way

Table 7 below should be used to help choose the appropriate mobile typical based on the location of work and its environment.

6 Work Zone Traffic Control 2007.doc

Table 7. Traffic Typical Applications for Mobile Operations

Location of Work Traffic Volume

(ADT)

Sight Distance (Horizontal, Vertical)

Typical

Outside Shoulder Freeway/Non-Freeway All Volumes n/a MD – 01

Shoulder Adequate MD – M11

<10,000 Limited MD – M12 Non-Freeway

>10,000 n/a MD – M12 Adequate MD – M11 <10,000 Limited MD – M12 Freeway

>10,000 n/a MD – M12 Shoulder (Minor Non-Vehicular Encroachment in Traveled Way)*

Adequate MD – M11 <10,000

Limited MD – M12 Non-Freeway >10,000 n/a MD – M12

Freeway n/a n/a

MD – M12

Roadway Adequate MD – M22

<10,000 Limited

* Minor non-vehicular encroachment in the traveled way is to be brief and not to exceed one lane of traffic from the median or outside shoulders.

Maintenance operations which involve minor non-vehicular encroachment on lanes other than those immediately adjacent to the median or outside shoulder are not considered mobile operations.

Any operations that do not fall within these parameters should be reviewed by your traffic and safety representative.

Adequate Sight Distance: For mobile operations, it is a length of roadway that the driver can see that is greater than or equal to the stopping sight distance as a function of the posted speed limit. See table 8 below.

Limited Sight Distance: For mobile operations, it is a length of roadway that the driver can see that is shorter than the stopping sight distance as a function of the posted speed limit. See table 8 below.

Table 8. Stopping Sight Distance as a Function of Posted Speed Limit

Speed (mph) 25 30 35 40 45 Distance (ft) 200 250 305 360 425

Speed (mph) 50 55 60 65 70 Distance (ft) 495 570 645 730 820

MD – M25 Two-Lane, Two-Way >10,000 n/a MD – M25 <50,000 n/a MD – M23 Multi-Lane w/ Shoulder >50,000 n/a MD – M24

Multi-Lane, Curbed All Volumes n/a MD – M21

7 Work Zone Traffic Control 2007.doc

Definitions

The following definitions are taken from the Michigan Manual of Uniform Traffic Control Devices.

Section 6G.02 Work Duration (MI) Support:

Chapter 6D and Sections 6F.68 and 6G.05 contain additional information regarding the steps to follow when pedestrian or bicycle facilities are affected by the worksite.

Work duration is a major factor in determining the number and types of devices used in work zones.

The duration of a work zone is defined relative to the length of time a work operation occupies a spot location.

Standard:

The five categories of work duration and their time at a location shall be:

A. Long-term stationary is work that occupies a location more than 3 days.

B. Intermediate-term stationary is work that occupies a location more than one daylight period up to 3 days, or nighttime work lasting more than 1 hour.

C. Short-term stationary is daytime work that occupies a location for more than 1 hour within a single daylight period.

D. Short duration is work that occupies a location up to 1 hour.

E. Mobile is work that moves intermittently or continuously.

Long-Term Stationary Work Support:

At long-term stationary work zones, there is ample time to install and realize benefits from the full range of temporary traffic control procedures and devices that are available for use.

Generally, larger channelizing devices, temporary roadways, and temporary traffic barriers are used.

Guidance:

Inappropriate markings in long-term stationary work zones should be removed and replaced with temporary markings.

Standard:

Since long-term operations extend into nighttime, retroreflective and/or illuminated devices shall be used in long-term stationary work zones.

8 Work Zone Traffic Control 2007.doc

Intermediate-Term Stationary Work Support:

In intermediate-term stationary work zones, it might not be feasible or practical to use procedures or devices that would be desirable for long-term stationary temporary traffic control zones, such as altered pavement markings, temporary traffic barriers, and temporary roadways.

The increased time to place and remove these devices in some cases could significantly lengthen the project, thus increasing exposure time. In other instances, there might be insufficient pay-back time to economically justify more elaborate temporary traffic control measures.

Standard:

Since intermediate-term operations extend into nighttime, retroreflective and/or illuminated devices shall be used in intermediate-term stationary work zones.

Short-Term Stationary Work

Most maintenance and utility operations are short-term stationary work.

Short-Duration Work

As compared to stationary operations, mobile and short-duration operations are activities that might involve different treatments. Devices having greater mobility might be necessary such as signs mounted on trucks. Devices that are larger, more imposing, or more visible can be used effectively and economically. The mobility of the work zone is important.

Maintaining reasonably safe work and road user conditions is a paramount goal in carrying out mobile operations.

Guidance:

Safety in short-duration or mobile operations should not be compromised by using fewer devices simply because the operation will frequently change its location.

Option:

Appropriately colored or marked vehicles with high-intensity rotating, flashing, oscillating, or strobe lights may be used in place of signs and channelizing devices for short-duration or mobile operations. These vehicles may be augmented with signs or arrow panels.

Support:

During short-duration work, it often takes longer to set up and remove the work zone than to perform the work. Workers face hazards in setting up and taking down the work zone. Also, since the work time is short, delays affecting road users are significantly increased when additional devices are installed and removed.

Option:

Considering these factors, simplified control procedures may be warranted for short-duration work. A reduction in the number of devices may be offset by the use of other more dominant devices such as highintensity rotating, flashing, oscillating, or strobe lights on work vehicles.

9 Work Zone Traffic Control 2007.doc

Mobile Operations Support:

Mobile operations often involve frequent short stops for activities such as litter cleanup, pothole patching, or utility operations, and are similar to short-duration operations.

Guidance:

Warning signs, high-intensity rotating, flashing, oscillating, or strobe lights on a vehicle, flags, and/or channelizing devices should be used and moved periodically to keep them near the mobile work area.

Option:

Traffic regulators may be used for mobile operations that often involve frequent short stops.

Mobile operations also include work activities where workers and equipment move along the road without stopping, usually at slow speeds. The advance warning area moves with the work area.

Guidance:

When mobile operations are being performed, a shadow vehicle equipped with an arrow panel or a sign should follow the work vehicle, especially when vehicular traffic speeds or volumes are high. Where feasible, warning signs should be placed along the roadway and moved periodically as work progresses.

Under high-volume conditions, consideration should be given to scheduling mobile operations work during off-peak hours.

If there are mobile operations on a high-speed travel lane of a multi-lane divided highway, arrow panels should be used.

Option:

For mobile operations that move at speeds less than 5 km/h (3 mph), mobile signs or stationary signing that is periodically retrieved and repositioned in the advance warning area may be used.

At higher speeds, vehicles may be used as components of the work zones for mobile operations.

Appropriately colored and marked vehicles with signs, flags, high-intensity rotating, flashing, oscillating, or strobe lights, truck-mounted attenuators, and arrow panels or portable changeable message signs may follow a train of moving work vehicles.

For some continuously moving operations, such as street sweeping and snow removal, a single work vehicle with appropriate warning devices on the vehicle may be used to provide warning to approaching road users.

Standard:

Mobile operations that move at speeds greater than 30 km/h (20 mph), such as pavement marking operations, shall have appropriate devices on the equipment (that is, high-intensity rotating, flashing, oscillating, or strobe lights, signs, or special lighting), or shall use a separate vehicle with appropriate warning devices.

10 Work Zone Traffic Control 2007.doc

Work Zone Defined The following definitions are taken from the MICHIGAN VEHICLE CODE Act 300 of 1949.

257.79d “Work zone” defined.

Sec. 79d.

“Work zone” means a portion of a street or highway that meets any of the following:

(a) Is between a “work zone begins” sign and an “end road work” sign.

(b) For construction, maintenance, or utility work activities conducted by a work crew and more than 1 moving vehicle, is between a “begin work convoy” sign and an “end work convoy” sign.

(c) For construction, maintenance, surveying, or utility work activities conducted by a work crew and 1 moving or stationary vehicle exhibiting a rotating beacon or strobe light, is between the following points:

(i) A point that is 150 feet behind the rear of the vehicle or that is the point from which the beacon or strobe light is first visible on the street or highway behind the vehicle, whichever is closer to the vehicle.

(ii) A point that is 150 feet in front of the front of the vehicle or that is the point from which the beacon or strobe light is first visible on the street or highway in front of the vehicle, whichever is closer to the vehicle.

Revision: 2007

Appendix A

USE OF LIGHTED ARROW

ON A HILL OR CURVE

500’ OR MORE

NOTE:

EXERCISE CARE WHEN PLACING "LIGHTED ARROW" ON VERTICAL

OR HORIZONTAL CURVES. ADJUST ALIGNMENT OF "LIGHTED

ARROW" TO ALLOW MAIN BEAM OF LAMPS TO BE SEEN BY DRIVER

FOR MAXIMUM EFFECTIVENESS. MD - LAP

A1

01/01/07

INCORRECT

USAGE

CORRECT

USAGE

INCORRECT

USAGE

CORRECT

USAGE

CORRECT

USAGE

INCORRECT

USAGE

REV. DATE:

NOT TO SCALE

PAGE

Michigan Department of Transportation

OPERATIONS

SHOULDER

W -1

R O

A D

W O

R K

A H

E A

D

SHOULDER

SHOULDER

SHOULDER

SHOULDER

NOTES

W -1

R O

A D

W O

R K

A H

E A

D

WORK AREA VARIES B D

WORK OUTSIDE SHOULDER

TYPE A WARNING FLASHER

TRAFFIC FLOW

(REQUIRED ON PLYWOOD SIGNS)

KEY

DURATION: APPLIES TO ALL DURATIONS

WORK AREA VARIES B D

MD - 01

NO SIGNS ARE REQUIRED IF DURATION IS SHORT-DURATION

OR MOBILE.

IF THE OPERATION HAS A VEHICLE(S) PARKED ON THE SHOULDER,

OR VEHICLES ACCESSING THE WORK SITE VIA THE HIGHWAY OR

CROSSING THE HIGHWAY TO PERFORM OPERATIONS, A

"ROAD WORK AHEAD" SIGN OR AN ARROW BOARD IN BAR MODE

SHALL BE USED.

01/01/07

A2REV. DATE:

KEY

CHANNELIZING DEVICES

LIGHTED ARROW PANEL

(CAUTION MODE)

TYPE A WARNING FLASHER

TRAFFIC FLOW

REFLECTS EXISTING

SPEED LIMIT

(REQUIRED ON PLYWOOD SIGNS)

D B

/3 L

W O

R K

A R

E A

V A

R

IE

S

S H

O U

L D

E R

S H

O U

L D

E R

SPEED

LIMIT

R2-1

XX

SPEED

LIMIT

R2-1

XX

W21-5b

RIGHT

SHOULDER

CLOSED

AHEAD

D

SHOULDER CLOSURE ON A

TWO-LANE, TWO-WAY ROADWAY

NO SPEED REDUCTION

D D

D

W20-1

ROAD

WORK

AHEAD

W20-1

ROAD

WORK

AHEAD

SPEED

LIMIT

R2-1

XX

PLACE THROUGHOUT WORK AREA AS

WARRANTED AND AFTER ALL MAJOR

CROSSROADS IF PERMANENT SIGNS

ARE NOT IN PLACE.

01/01/07

MD - 11a A3

DURATION: SHORT-TERM STATIONARY

LIGHTED ARROW PANEL

(CAUTION MODE)

TYPE A WARNING FLASHER

TRAFFIC FLOW

REFLECTS EXISTING

SPEED LIMIT

(REQUIRED ON PLYWOOD SIGNS)

D B

/3 L

W O

R K

A R

E A

V A

R

IE

S

S H

O U

L D

E R

S H

O U

L D

E R

WORK

ZONE

BEGINS

R5-18c

SPEED

LIMIT

R2-1

XX

WORK

ZONE

BEGINS

R5-18c

SPEED

LIMIT

R2-1

XX

W21-5b

RIGHT

SHOULDER

CLOSED

AHEAD

D D

D 2D

R5-18

TRAFFIC

FINES

DOUBLED

IN WORK

ZONES

R5-18

TRAFFIC

FINES

DOUBLED

IN WORK

ZONES

R5-18b

INJURE /

KILL A

WORKER

$7500 +

15 YEARS

R5-18b

INJURE /

KILL A

WORKER

$7500 +

15 YEARS

DURATION: LONG-TERM STATIONARY,

INTERMEDIATE-TERM STATIONARY

2D D

D D

D

SHOULDER CLOSURE ON A

TWO-LANE, TWO-WAY ROADWAY

NO SPEED REDUCTION

D

G20-2

END

ROAD WORK

G20-2

END

ROAD WORK

W20-1

ROAD

WORK

AHEAD

W20-1

ROAD

WORK

AHEAD

PLACE THROUGHOUT WORK AREA AS

WARRANTED AND AFTER ALL MAJOR

CROSSROADS IF PERMANENT SIGNS

ARE NOT IN PLACE.

SPEED

LIMIT

R2-1

XX

01/01/07

MD - 11b

A4REV. DATE:

/3 L

S H

O U

L D

E R

S H

O U

L D

E R

SPEED

LIMIT

R2-1

XX

SPEED

LIMIT

R2-1

XX

W21-5b

RIGHT

SHOULDER

CLOSED

AHEAD

D

D

REDUCED

AHEAD

W3-5b

SPEED ZONE

B W

O R

K A

R E

A V

A R

IE

S

DURATION: SHORT-TERM STATIONARY,

SHORT DURATIONSHOULDER CLOSURE ON A

TWO-LANE, TWO-WAY ROADWAY

WITH SPEED REDUCTION

D D

D

D D

SPEED

LIMIT

R2-1

XX

W20-1

ROAD

WORK

AHEAD

W20-1

ROAD

WORK

AHEAD

PLACE THROUGHOUT WORK AREA

AS WARRANTED AND AFTER ALL

MAJOR CROSSROADS

SPEED

LIMIT

R2-1

XX

TYPE A WARNING FLASHER

TRAFFIC FLOW

REFLECTS EXISTING SPEED LIMIT

(REQUIRED ON PLYWOOD SIGNS)

REFLECTS SPEED LIMIT

BEYOND WORK AREA

LIGHTED ARROW PANEL

(CAUTION MODE)

01/01/07

MD - 11c

A5REV. DATE:

DURATION: LONG-TERM STATIONARY,INTERMEDIATE-TERM STATIONARY

D1/3 LSHOULDER SHOULDER WORKZONEBEGINSR5-18cSPEEDLIMITR2-1XXWORKZONEBEGINSR5-18c SPEEDLIMITR2-1XX W21-5bRIGHTSHOULDERCLOSEDAHEADDDD

R5-18TRAFFICFINESDOUBLEDIN WORKZONES

R5-18TRAFFICFINESDOUBLEDIN WORKZONES R5-18bINJURE /KILL AWORKER$7500 +15 YEARS

R5-18bINJURE /KILL AWORKER$7500 +15 YEARS

DD2DD

DDD

D REDUCEDAHEADW3-5bSPEED ZONENOT TO SCALE

BWORK AREA VARIES SPEEDLIMITR2-1XXDD KEY CHANNELIZING DEVICES LIGHTED ARROW PANEL(CAUTION MODE) TYPE A WARNING FLASHERTRAFFIC FLOWREFLECTS EXISTING SPEED LIMIT

G20-2ENDROAD WORK

G20-2ENDROAD WORK (REQUIRED ON PLYWOOD SIGNS)D

W20-1ROADWORKAHEAD

W20-1ROADWORKAHEAD PLACE THROUGHOUT WORK AREAAS WARRANTED AND AFTER ALLMAJOR CROSSROADSSPEEDLIMITR2-1XX REFLECTS SPEED LIMITBEYOND WORK AREA 01/01/07 MD - 11d A6SHOULDER CLOSURE ON ATWO-LANE, TWO-WAY ROADWAYWITH SPEED REDUCTION REV. DATE: NOT TO SCALE PAGE Michigan Department of TransportationOPERATIONS

B

/3 L

W O

R K

A R

E A

V A

R

IE

S

S H

O U

L D

E R

S H

O U

L D

E R

W21-5b

RIGHT

SHOULDER

CLOSED

AHEAD

CLOSED

RIGHT

SHOULDER

D

W21-5a

SPEED

LIMIT

R2-1

XX

SPEED

LIMIT

R2-1

XX

SHOULDER CLOSURE ON A

DIVIDED ROADWAY OR FREEWAY

NO SPEED REDUCTION

LIGHTED ARROW PANEL

(CAUTION MODE)

REFLECTS EXISTING

SPEED LIMIT

D D

D

(REQUIRED ON PLYWOOD SIGNS)

W20-1

ROAD

WORK

AHEAD

W20-1

ROAD

WORK

AHEAD

SPEED

LIMIT

R2-1

XX

PLACE THROUGHOUT WORK AREA

AS WARRANTED AND AFTER ALL

ENTRANCE RAMPS IF PERMANENT

SIGNS ARE NOT IN PLACE.

01/01/07

MD - 12a A7

DURATION: SHORT-TERM STATIONARY

LIGHTED ARROW PANEL

(CAUTION MODE)

TYPE A WARNING FLASHER

TRAFFIC FLOW

REFLECTS EXISTING

SPEED LIMIT

(REQUIRED ON PLYWOOD SIGNS)

D B

/3 L

W O

R K

A R

E A

V A

R

IE

S

S H

O U

L D

E R

S H

O U

L D

E R

WORK

ZONE

BEGINS

R5-18c

SPEED

LIMIT

R2-1

XX

WORK

ZONE

BEGINS

R5-18c

SPEED

LIMIT

R2-1

XX

W21-5b

RIGHT

SHOULDER

CLOSED

AHEAD

CLOSED

RIGHT

SHOULDER

D D

D D

W21-5a

2D

R5-18

TRAFFIC

FINES

DOUBLED

IN WORK

ZONES

R5-18

TRAFFIC

FINES

DOUBLED

IN WORK

ZONES

R5-18b

INJURE /

KILL A

WORKER

$7500 +

15 YEARS

R5-18b

INJURE /

KILL A

WORKER

$7500 +

15 YEARS

DURATION: LONG-TERM STATIONARY,

INTERMEDIATE-TERM STATIONARYSHOULDER CLOSURE ON A

DIVIDED ROADWAY OR FREEWAY

NO SPEED REDUCTION

G20-2

END

ROAD WORK

G20-2

END

ROAD WORK

W20-1

ROAD

WORK

AHEAD

W20-1

ROAD

WORK

AHEAD

SPEED

LIMIT

R2-1

XXSPEED

LIMIT

R2-1

XX

PLACE THROUGHOUT WORK AREA

AS WARRANTED AND AFTER ALL

ENTRANCE RAMPS IF PERMANENT

SIGNS ARE NOT IN PLACE.

PLACE THROUGHOUT WORK AREA

AS WARRANTED AND AFTER ALL

ENTRANCE RAMPS IF PERMANENT

SIGNS ARE NOT IN PLACE.

01/01/07

MD - 12b

A8REV. DATE:

/3 L

W O

R K

A R

E A

V A

R

IE

S

S H

O U

L D

E R

S H

O U

L D

E R

SPEED

LIMIT

R2-1

XX

SPEED

LIMIT

R2-1

XX

W21-5b

RIGHT

SHOULDER

CLOSED

AHEAD

D

CLOSED

RIGHT

SHOULDER

W21-5a

REDUCED

AHEAD

W3-5b

SPEED ZONE

REDUCED

AHEAD

W3-5b

SPEED ZONE

DURATION: SHORT-TERM STATIONARY,

SHORT DURATION

SPEED

LIMIT

R2-1

XX

SPEED

LIMIT

R2-1

XX

D D

D D

KEY

CHANNELIZING DEVICES

LIGHTED ARROW PANEL

(CAUTION MODE)

TYPE A WARNING FLASHER

(REQUIRED ON PLYWOOD SIGNS)

DIVIDED ROADWAY OR FREEWAY

WITH A MAXIMUM 10 MPH

SPEED REDUCTION

D

W20-1

ROAD

WORK

AHEAD

W20-1

ROAD

WORK

AHEAD

REFLECTS SPEED LIMIT

BEYOND WORK AREA

PLACE THROUGHOUT WORK

AREA AS WARRANTED AND

AFTER ALL ENTRANCE RAMPS

SPEED

LIMIT

R2-1

XX

SPEED

LIMIT

R2-1

XX

PLACE THROUGHOUT WORK

AREA AS WARRANTED AND

AFTER ALL ENTRANCE RAMPS

01/01/07

MD - 12c

A9REV. DATE:

/3 L

W O

R K

A R

E A

V A

R

IE

S

S H

O U

L D

E R

S H

O U

L D

E R

WORK

ZONE

BEGINS

R5-18c

SPEED

LIMIT

R2-1

XX

WORK

ZONE

BEGINS

R5-18c

SPEED

LIMIT

R2-1

XX

W21-5b

RIGHT

SHOULDER

CLOSED

AHEAD

D D

D D

D

R5-18

TRAFFIC

FINES

DOUBLED

IN WORK

ZONES

R5-18

TRAFFIC

FINES

DOUBLED

IN WORK

ZONES

R5-18b

INJURE /

KILL A

WORKER

$7500 +

15 YEARS

R5-18b

INJURE /

KILL A

WORKER

$7500 +

15 YEARS

D D

DURATION: LONG-TERM STATIONARY,

INTERMEDIATE-TERM STATIONARY

CLOSED

RIGHT

SHOULDER

W21-5a

D

REDUCED

AHEAD

W3-5b

SPEED ZONE

REDUCED

AHEAD

W3-5b

SPEED ZONE

SPEED

LIMIT

R2-1

XX

D

SPEED

LIMIT

R2-1

XX

G20-2

END

ROAD WORK

G20-2

END

ROAD WORK

KEY

CHANNELIZING DEVICES

LIGHTED ARROW PANEL

(CAUTION MODE)

TYPE A WARNING FLASHER

DIVIDED ROADWAY OR FREEWAY

WITH A MAXIMUM 10 MPH

SPEED REDUCTION

W20-1

ROAD

WORK

AHEAD

W20-1

ROAD

WORK

AHEAD

SPEED

LIMIT

R2-1

XX

PLACE THROUGHOUT WORK

AREA AS WARRANTED AND

AFTER ALL ENTRANCE RAMPS

SPEED

LIMIT

R2-1

XX

PLACE THROUGHOUT WORK

AREA AS WARRANTED AND

AFTER ALL ENTRANCE RAMPS

REFLECTS SPEED LIMIT

BEYOND WORK AREA

01/01/07

MD - 12d

A10REV. DATE:

W20-4

ONE LANE

ROAD

AHEAD

W20-7a

W20-7a

W20-4

ONE LANE

ROAD

AHEAD

S H

O U

L D

E R

S H

O U

L D

E R

W O

R K

A R

EA

V A

R

IE

S

KEY

f t T

O f t

50 ft TO

100 ft MAXIMUM

D

D

SPEED

LIMIT

R2-1

XX

SPEED

LIMIT

R2-1

XX

TRAFFIC REGULATOR

TRAFFIC FLOW

W3-4

BE

PREPARED

TO STOP

REFLECTS EXISTING

SPEED LIMIT

W3-4

BE

PREPARED

TO STOP

LANE CLOSURE FOR A

TWO-LANE TWO-WAY ROADWAY

UTILIZING TRAFFIC REGULATORS,

NO SPEED REDUCTION

(REQUIRED ON PLYWOOD SIGNS)

DURATION: SHORT-TERM STATIONARY

D D

D

D

D

D

W20-1

ROAD

WORK

AHEAD

W20-1

ROAD

WORK

AHEAD

SPEED

LIMIT

R2-1

XX

SPEED

LIMIT

R2-1

XX

PLACE THROUGHOUT WORK AREA AS

WARRANTED AND AFTER ALL MAJOR

CROSSROADS IF PERMANENT SIGNS

ARE NOT IN PLACE.

PLACE THROUGHOUT WORK AREA AS

WARRANTED AND AFTER ALL MAJOR

CROSSROADS IF PERMANENT SIGNS

ARE NOT IN PLACE.

01/01/07

MD - 21a

A11REV. DATE:

W20-4

ONE LANE

ROAD

AHEAD

W20-7a

D D

D D

D

D

D

D

W20-7a

W20-4

ONE LANE

ROAD

AHEAD

S H

O U

L D

E R

S H

O U

L D

E R

W O

R K

A R

EA

V A

R

IE

S

KEY

f t T

O f t

50 ft TO

100 ft MAXIMUM

D

D

WORK

ZONE

BEGINS

R5-18c

WORK

ZONE

BEGINS

R5-18c

SPEED

LIMIT

R2-1

XX

SPEED

LIMIT

R2-1

XX

TRAFFIC FLOW

W3-4

BE

PREPARED

TO STOP

REFLECTS EXISTING

SPEED LIMIT

W3-4

BE

PREPARED

TO STOP

LANE CLOSURE FOR A

TWO-LANE TWO-WAY ROADWAY

UTILIZING TRAFFIC REGULATORS,

NO SPEED REDUCTION

R5-18b

INJURE /

KILL A

WORKER

$7500 +

15 YEARS

R5-18

TRAFFIC

FINES

DOUBLED

IN WORK

ZONES

R5-18

TRAFFIC

FINES

DOUBLED

IN WORK

ZONES

R5-18b

INJURE /

KILL A

WORKER

$7500 +

15 YEARS

D

D

D D

(REQUIRED ON PLYWOOD SIGNS)

2D G20-2

END

ROAD WORK

2D

G20-2

END

ROAD WORK

DURATION: LONG-TERM STATIONARY,

INTERMEDIATE-TERM STATIONARY

W20-1

ROAD

WORK

AHEAD

W20-1

ROAD

WORK

AHEAD

PLACE THROUGHOUT WORK AREA AS

WARRANTED AND AFTER ALL MAJOR

CROSSROADS IF PERMANENT SIGNS

ARE NOT IN PLACE.

SPEED

LIMIT

R2-1

XX

PLACE THROUGHOUT WORK AREA AS

WARRANTED AND AFTER ALL MAJOR

CROSSROADS IF PERMANENT SIGNS

ARE NOT IN PLACE.

SPEED

LIMIT

R2-1

XX

01/01/07

MD - 21c

A12REV. DATE:

TEMPORARY PAVEMENT MARKING

(SOLID 24 " STOP BAR)

STROBE LIGHT (OPTIONAL)

STOP AND GO SIGNALS

TRAFFIC FLOW

REFLECTS EXISTING

SPEED LIMIT

G20-2

END

ROAD WORK

G20-2

END

ROAD WORK

R5-18b

INJURE /

KILL A

WORKER

$7500 +

15 YEARS

R5-18

TRAFFIC

FINES

DOUBLED

IN WORK

ZONES

R5-18

TRAFFIC

FINES

DOUBLED

IN WORK

ZONES

S H

O U

L D

E R

S H

O U

L D

E R

D D

D

D D

D

W20-4

ONE LANE

ROAD

AHEAD

W20-4

ONE LANE

ROAD

AHEAD

W20-1

ROAD

WORK

AHEAD

W20-1

ROAD

WORK

AHEAD

W3-3

W3-3

S H

O U

L D

E R

S H

O U

L D

E R

STOP

RED

R10-6

HERE ON

STOP

RED

R10-6

HERE ON

TEMPORARY

CONCRETE

BARRIER

TEMPORARY

PAVEMENT

MARKINGS

TEMPORARY

PAVEMENT

MARKINGS

VERTICAL PANEL (L) VERTICAL PANEL (R)

VERTICAL PANEL (L)VERTICAL PANEL (R)

f t f t

100 ft MAXIMUM

50 ft f t f t

100 ft MAXIMUM

50 ft

D

WORK

ZONE

BEGINS

R5-18c

D

WORK

ZONE

BEGINS

R5-18c

D

DSPEED

LIMIT

R2-1

XX

SPEED

LIMIT

R2-1

XX

D

D D

D

D D

DURATION: LONG-TERM STATIONARY,

INTERMEDIATE-TERM STATIONARY

TYPE A WARNING FLASHER

(REQUIRED ON PLYWOOD SIGNS)

R5-18b

INJURE /

KILL A

WORKER

$7500 +

15 YEARS

TEMPORARY TRAFFIC SIGNAL,

TWO-LANE, TWO-WAY ROADWAY

01/01/07

MD - 22

A13REV. DATE:

W20-5

RIGHT LANE

CLOSED

AHEAD

D

L B

W O

R K

A R

E A

V A

R

IE

S

S H

O U

L D

E R

S H

O U

L D

E R

KEY

D

SPEED

LIMIT

R2-1

XX

SPEED

LIMIT

R2-1

XX

W4-2

REFLECTS EXISTING

SPEED LIMIT

DURATION: SHORT-TERM STATIONARY

D D

D

D

W20-1

ROAD

WORK

AHEAD

W20-1

ROAD

WORK

AHEAD

(REQUIRED ON PLYWOOD SIGNS)

PLACE THROUGHOUT WORK AREA AS

WARRANTED AND AFTER ALL MAJOR

CROSSROADS IF PERMANENT SIGNS

ARE NOT IN PLACE.

SPEED

LIMIT

R2-1

XX

01/01/07

MD - 23a A14

ONE-LANE CLOSURE ON AN

UNDIVIDED MULTI-LANE ROADWAY,

NO SPEED REDUCTION

CLOSED

AHEAD

D D

D

D

L B

W O

R K

A R

E A

V A

R

IE

S

S H

O U

L D

E R

S H

O U

L D

E R

KEY

D D

D D

WORK

ZONE

BEGINS

R5-18c

WORK

ZONE

BEGINS

R5-18c

SPEED

LIMIT

R2-1

XX

SPEED

LIMIT

R2-1

XX

REFLECTS EXISTING

SPEED LIMIT

D D

R5-18

TRAFFIC

FINES

DOUBLED

IN WORK

ZONES

D D

R5-18

TRAFFIC

FINES

DOUBLED

IN WORK

ZONES

R5-18b

INJURE /

KILL A

WORKER

$7500 +

15 YEARS

G20-2

END

ROAD WORK

2D

2D

G20-2

END

ROAD WORK

DURATION: LONG-TERM STATIONARY,

INTERMEDIATE-TERM STATIONARY

W20-1

ROAD

WORK

AHEAD

W20-1

ROAD

WORK

AHEAD

PLACE THROUGHOUT WORK AREA AS

WARRANTED AND AFTER ALL MAJOR

CROSSROADS IF PERMANENT SIGNS

ARE NOT IN PLACE.

SPEED

LIMIT

R2-1

XX

(REQUIRED ON PLYWOOD SIGNS)

01/01/07

MD - 23b A15

ONE-LANE CLOSURE ON AN

UNDIVIDED MULTI-LANE ROADWAY,

NO SPEED REDUCTION

R5-18b

INJURE /

KILL A

WORKER

$7500 +

15 YEARS

W20-5RIGHT LANECLOSEDAHEAD

DD LBWORK AREA VARIES

SHOULDERSHOULDER

DDNO SPEED REDUCTIONTHIS DIRECTION

MAXIMUM 10MPH SPEEDREDUCTION THIS DIRECTION

SPEEDLIMITR2-1XX SPEEDLIMITR2-1XX SPEEDLIMITR2-1XXREDUCEDAHEADW3-5bSPEED ZONEW4-2DDDD DURATION: SHORT-TERM STATIONARYW20-1ROADWORKAHEAD W20-1ROADWORKAHEAD SPEEDLIMITR2-1XXPLACE THROUGHOUT WORK AREAAS WARRANTED AND AFTER ALLMAJOR CROSSROADS

KEY CHANNELIZING DEVICES LIGHTED ARROW PANEL TYPE A WARNING FLASHERTRAFFIC FLOWREFLECTS EXISTING SPEED LIMIT(REQUIRED ON PLYWOOD SIGNS)REFLECTS SPEED LIMIT BEYOND WORK AREA ONE-LANE CLOSURE ON ANUNDIVIDED MULTI-LANE ROADWAY,WITH A MAXIMUM 10 MPHSPEED REDUCTION 01/01/07 MD - 23c A16REV. DATE: NOT TO SCALE PAGE Michigan Department of TransportationOPERATIONS

CLOSED

AHEAD

D D

D D

D

L B

W O

R K

A R

E A

V A

R

IE

S

S H

O U

L D

E R

S H

O U

L D

E R

KEY

D D

D

WORK

ZONE

BEGINS

R5-18c

D D

WORK

ZONE

BEGINS

R5-18c

D

NO SPEED REDUCTION

THIS DIRECTION

MAXIMUM 10MPH SPEED

REDUCTION THIS DIRECTION

SPEED

LIMIT

R2-1

XX

SPEED

LIMIT

R2-1

XX

SPEED

LIMIT

R2-1

XX

REDUCED

AHEAD

W3-5b

SPEED ZONE

REFLECTS EXISTING SPEED LIMIT

(REQUIRED ON PLYWOOD SIGNS)

D D

R5-18

TRAFFIC

FINES

DOUBLED

IN WORK

ZONES

R5-18b

INJURE /

KILL A

WORKER

$7500 +

15 YEARS

DURATION: LONG-TERM STATIONARY,

INTERMEDIATE-TERM STATIONARY

D D

R5-18b

INJURE /

KILL A

WORKER

$7500 +

15 YEARS

R5-18

TRAFFIC

FINES

DOUBLED

IN WORK

ZONES

D

G20-2

END

ROAD WORK

2D

G20-2

END

ROAD WORK

W20-1

ROAD

WORK

AHEAD

W20-1

ROAD

WORK

AHEAD

REFLECTS SPEED LIMIT

BEYOND WORK AREA

SPEED

LIMIT

R2-1

XX

PLACE THROUGHOUT WORK AREA

AS WARRANTED AND AFTER ALL

MAJOR CROSSROADS

ONE-LANE CLOSURE ON AN

UNDIVIDED MULTI-LANE ROADWAY,

WITH A MAXIMUM 10 MPH

SPEED REDUCTION

01/01/07

MD - 23d

A17REV. DATE:

REFLECTS EXISTING

SPEED LIMIT

W O

R K

A R

E A

V A

R

IE

S D

B

B L

L

S H

O U

L D

E R

S H

O U

L D

E R

W20-5

LEFT LANE

CLOSED

AHEAD

W20-5

LEFT LANE

CLOSED

AHEAD

100 ft MINIMUM

100 ft MINIMUM

D

SPEED

LIMIT

R2-1

XX

SPEED

LIMIT

R2-1

XX

W4-2

W4-2

(REQUIRED ON PLYWOOD SIGNS)

D D

D

D D

D

DURATION: SHORT-TERM STATIONARY

W20-1

ROAD

WORK

AHEAD

W20-1

ROAD

WORK

AHEAD

PLACE THROUGHOUT WORK AREA AS

WARRANTED AND AFTER ALL MAJOR

CROSSROADS IF PERMANENT SIGNS

ARE NOT IN PLACE.

PLACE THROUGHOUT WORK AREA AS

WARRANTED AND AFTER ALL MAJOR

CROSSROADS IF PERMANENT SIGNS

ARE NOT IN PLACE.

SPEED

LIMIT

R2-1

XX

SPEED

LIMIT

R2-1

XX

CLOSURE FOR THE CENTER TWO LANES

OF A MULTI-LANE UNDIVIDED ROADWAY,

NO SPEED REDUCTION 01/01/07

MD - 24a

A18REV. DATE:

REFLECTS EXISTING

SPEED LIMIT

W O

R K

A R

E A

V A

R

IE

S

D D

D D

D B

B L

L

S H

O U

L D

E R

S H

O U

L D

E R

W20-5

LEFT LANE

CLOSED

AHEAD

W20-5

LEFT LANE

CLOSED

AHEAD

100 ft MINIMUM

100 ft MINIMUM

D D

WORK

ZONE

BEGINS

R5-18c

D D

D

WORK

ZONE

BEGINS

R5-18c

SPEED

LIMIT

R2-1

XX

SPEED

LIMIT

R2-1

XX

W4-2

W4-2 G20-2

END

ROAD WORK

G20-2

END

ROAD WORK

(REQUIRED ON PLYWOOD SIGNS)

2D D

R5-18

TRAFFIC

FINES

DOUBLED

IN WORK

ZONES

R5-18b

INJURE /

KILL A

WORKER

$7500 +

15 YEARS

R5-18b

INJURE /

KILL A

WORKER

$7500 +

15 YEARS

R5-18

TRAFFIC

FINES

DOUBLED

IN WORK

ZONES

D D

2D

DURATION: LONG-TERM STATIONARY

INTERMEDIATE-TERM STATIONARY

D

CLOSURE FOR THE CENTER TWO LANES

OF A MULTI-LANE UNDIVIDED ROADWAY,

WITH NO SPEED REDUCTION

W20-1

ROAD

WORK

AHEAD

W20-1

ROAD

WORK

AHEAD

SPEED

LIMIT

R2-1

XX

PLACE THROUGHOUT WORK AREA AS

WARRANTED AND AFTER ALL MAJOR

CROSSROADS IF PERMANENT SIGNS

ARE NOT IN PLACE.

PLACE THROUGHOUT WORK AREA AS

WARRANTED AND AFTER ALL MAJOR

CROSSROADS IF PERMANENT SIGNS

ARE NOT IN PLACE.

SPEED

LIMIT

R2-1

XX

01/01/07

MD - 24b

A19REV. DATE:

W O

R K

A R

E A

V A

R

IE

S D

B

B L

L

S H

O U

L D

E R

S H

O U

L D

E R

W20-5

LEFT LANE

CLOSED

AHEAD

W20-5

LEFT LANE

CLOSED

AHEAD

100 ft MINIMUM

100 ft MINIMUM

D

SPEED

LIMIT

R2-1

XX

SPEED

LIMIT

R2-1

XX

W4-2

W4-2

D

REDUCED

AHEAD

W3-5b

SPEED ZONE

REDUCED

AHEAD

W3-5b

SPEED ZONE

CLOSURE FOR THE CENTER TWO LANES

OF A MULTI-LANE UNDIVIDED ROADWAY,

WITH MAXIMUM 10 MPH

SPEED REDUCTION

D

SPEED

LIMIT

R2-1

XX

SPEED

LIMIT

R2-1

XX

D D

D D

D D

D D

DURATION: SHORT-TERM STATIONARY

W20-1

ROAD

WORK

AHEAD

W20-1

ROAD

WORK

AHEAD

SPEED

LIMIT

R2-1

XX

SPEED

LIMIT

R2-1

XX

(REQUIRED ON PLYWOOD SIGNS)

REFLECTS SPEED LIMIT

BEYOND WORK AREA

PLACE THROUGHOUT WORK AREA

AS WARRANTED AND AFTER ALL

MAJOR CROSSROADS

PLACE THROUGHOUT WORK AREA

AS WARRANTED AND AFTER ALL

MAJOR CROSSROADS

01/01/07

MD - 24c

A20REV. DATE:

W O

R K

A R

E A

V A

R

IE

S

D D

D D

D B

B L

L

S H

O U

L D

E R

S H

O U

L D

E R

W20-5

LEFT LANE

CLOSED

AHEAD

W20-5

LEFT LANE

CLOSED

AHEAD

100 ft MINIMUM

100 ft MINIMUM

D D

WORK

ZONE

BEGINS

R5-18c

D D

D

WORK

ZONE

BEGINS

R5-18c

SPEED

LIMIT

R2-1

XX

SPEED

LIMIT

R2-1

XX

W4-2

W4-2 G20-2

END

ROAD WORK

G20-2

END

ROAD WORK

(REQUIRED ON PLYWOOD SIGNS)

D D

D

R5-18

TRAFFIC

FINES

DOUBLED

IN WORK

ZONES

R5-18b

INJURE /

KILL A

WORKER

$7500 +

15 YEARS

R5-18b

INJURE /

KILL A

WORKER

$7500 +

15 YEARS

R5-18

TRAFFIC

FINES

DOUBLED

IN WORK

ZONES

D D

D

DURATION: LONG-TERM STATIONARY

INTERMEDIATE-TERM STATIONARY

D

REDUCED

AHEAD

W3-5b

SPEED ZONE

REDUCED

AHEAD

W3-5b

SPEED ZONE

D

CLOSURE FOR THE CENTER TWO LANES

OF A MULTI-LANE UNDIVIDED ROADWAY,

WITH MAXIMUM 10 MPH

SPEED REDUCTION

D

SPEED

LIMIT

R2-1

XX

D

SPEED

LIMIT

R2-1

XX

W20-1

ROAD

WORK

AHEAD

W20-1

ROAD

WORK

AHEAD

REFLECTS SPEED LIMIT

BEYOND WORK AREA

PLACE THROUGHOUT WORK AREA

AS WARRANTED AND AFTER ALL

MAJOR CROSSROADS.

SPEED

LIMIT

R2-1

XX

SPEED

LIMIT

R2-1

XX

PLACE THROUGHOUT WORK AREA

AS WARRANTED AND AFTER ALL

MAJOR CROSSROADS.

01/01/07

MD - 24d

A21REV. DATE:

W20-1

ROAD

WORK

AHEAD

B W

O R

K A

R E

A V

A R

IE

S

S H

O U

L D

E R

S H

O U

L D

E R

KEY

D B

CENTER

LANE

CLOSED

AHEAD

W20-5a

(MODIFIED)

L

1/3 L

1/3 L

D

SPEED

LIMIT

R2-1

XX

SPEED

LIMIT

R2-1

XX

LIGHTED ARROW PANEL

REFLECTS EXISTING

SPEED LIMIT

W20-5a

(MODIFIED)

CENTER

& LEFT LANE

CLOSED

AHEAD

SPEED

LIMIT

R2-1

XX

SPEED

LIMIT

R2-1

XX

(REQUIRED ON PLYWOOD SIGNS)

DURATION: SHORT-TERM STATIONARY

D D

D

D

DW20-1

ROAD

WORK

AHEAD

PLACE THROUGHOUT WORK AREA AS

WARRANTED AND AFTER ALL MAJOR

CROSSROADS IF PERMANENT SIGNS

ARE NOT IN PLACE.

PLACE THROUGHOUT WORK AREA AS

WARRANTED AND AFTER ALL MAJOR

CROSSROADS IF PERMANENT SIGNS

ARE NOT IN PLACE.

CLOSURE FOR THE CENTER LANE

AND ADJACENT THROUGH LANE

OF A MULTI-LANE UNDIVIDED ROADWAY,

NO SPEED REDUCTION 01/01/07

MD - 25a

A22REV. DATE:

WORK

AHEAD

W20-1

ROAD

WORK

AHEAD

D D

B W

O R

K A

R E

A V

A R

IE

S

S H

O U

L D

E R

S H

O U

L D

E R

KEY

D D

B

CENTER

LANE

CLOSED

AHEAD

W20-5a

(MODIFIED)

L

1/3 L

1/3 L

D D

D

WORK

ZONE

BEGINS

R5-18c

D D

WORK

ZONE

BEGINS

R5-18c

END

ROAD WORK

END

ROAD WORK

SPEED

LIMIT

R2-1

XX

SPEED

LIMIT

R2-1

XX

LIGHTED ARROW PANEL

REFLECTS EXISTING

SPEED LIMIT

D D

W20-5a

(MODIFIED)

CENTER

& LEFT LANE

CLOSED

AHEAD

R5-18b

INJURE /

KILL A

WORKER

$7500 +

15 YEARS

R5-18

TRAFFIC

FINES

DOUBLED

IN WORK

ZONES

2D

2D

D D

R5-18

TRAFFIC

FINES

DOUBLED

IN WORK

ZONES

R5-18b

INJURE /

KILL A

WORKER

$7500 +

15 YEARS

SPEED

LIMIT

R2-1

XX

PLACE THROUGHOUT WORK AREA AS

INDICATED AND AFTER ALL MAJOR

CROSSROADS IF PERMANENT SIGNS

ARE NOT IN PLACE.

SPEED

LIMIT

R2-1

XX

PLACE THROUGHOUT WORK AREA AS

INDICATED AND AFTER ALL MAJOR

CROSSROADS IF PERMANENT SIGNS

ARE NOT IN PLACE.

(REQUIRED ON PLYWOOD SIGNS)

DURATION: LONG-TERM STATIONARY

INTERMEDIATE-TERM STATIONARY

01/01/07

MD - 25b A23

CLOSURE FOR THE CENTER LANE

AND ADJACENT THROUGH LANE

OF A MULTI-LANE UNDIVIDED ROADWAY,

NO SPEED REDUCTION

WORK

AHEAD

W20-1

ROAD

WORK

AHEAD

B W

O R

K A

R E

A V

A R

IE

S

S H

O U

L D

E R

S H

O U

L D

E R

D B

CENTER

LANE

CLOSED

AHEAD

W20-5a

(MODIFIED)

L

1/3 L

1/3 L

D

SPEED

LIMIT

R2-1

XX

SPEED

LIMIT

R2-1

XX

W4-2

W20-5a

(MODIFIED)

CENTER

& LEFT LANE

CLOSED

AHEAD

D

SPEED

LIMIT

R2-1

XX

PLACE THROUGHOUT WORK AREA AS

INDICATED AND AFTER ALL MAJOR

CROSSROADS IF PERMANENT SIGNS

ARE NOT IN PLACE.

SPEED

LIMIT

R2-1

XX

PLACE THROUGHOUT WORK AREA AS

INDICATED AND AFTER ALL MAJOR

CROSSROADS IF PERMANENT SIGNS

ARE NOT IN PLACE.

REDUCED

AHEAD

W3-5b

SPEED ZONE

SPEED

LIMIT

R2-1

XX

D D

D D

D D

DURATION: SHORT-TERM STATIONARY

CLOSURE FOR THE CENTER LANE

AND ADJACENT THROUGH LANE

OF A MULTI-LANE UNDIVIDED ROADWAY,

WITH MAXIMUM 10 MPH SPEED REDUCTION 01/01/07

MD - 25c A24

REFLECTS EXISTING SPEED LIMIT

(REQUIRED ON PLYWOOD SIGNS)

REFLECTS SPEED LIMIT

BEYOND WORK AREA

WORK

AHEAD

W20-1

ROAD

WORK

AHEAD

B W

O R

K A

R E

A V

A R

IE

S

S H

O U

L D

E R

S H

O U

L D

E R

KEY

D B

CENTER

LANE

CLOSED

AHEAD

W20-5a

(MODIFIED)

L

1/3 L

1/3 L

D

WORK

ZONE

BEGINS

R5-18c

WORK

ZONE

BEGINS

R5-18c

END

ROAD WORK

END

ROAD WORK

SPEED

LIMIT

R2-1

XX

SPEED

LIMIT

R2-1

XX

LIGHTED ARROW PANEL

REFLECTS EXISTING

SPEED LIMIT

W20-5a

(MODIFIED)

CENTER

& LEFT LANE

CLOSED

AHEAD

R5-18b

INJURE /

KILL A

WORKER

$7500 +

15 YEARS

R5-18

TRAFFIC

FINES

DOUBLED

IN WORK

ZONES

2D

D

R5-18

TRAFFIC

FINES

DOUBLED

IN WORK

ZONES

R5-18b

INJURE /

KILL A

WORKER

$7500 +

15 YEARS

SPEED

LIMIT

R2-1

XX

SPEED

LIMIT

R2-1

XX

(REQUIRED ON PLYWOOD SIGNS)

DURATION: LONG-TERM STATIONARY

INTERMEDIATE-TERM STATIONARY

D D

D D

D D

D

REDUCED

AHEAD

W3-5b

SPEED ZONE

D D

D D

D

D

SPEED

LIMIT

R2-1

XX

REFLECTS SPEED LIMIT

BEYOND WORK AREA

PLACE THROUGHOUT WORK AREA

AS WARRANTED AND AFTER ALL

MAJOR CROSSROADS.

PLACE THROUGHOUT WORK AREA

AS WARRANTED AND AFTER ALL

MAJOR CROSSROADS.

CLOSURE FOR THE CENTER LANE

AND ADJACENT THROUGH LANE

OF A MULTI-LANE UNDIVIDED ROADWAY,

WITH MAXIMUM 10 MPH SPEED REDUCTION 01/01/07

MD - 25d

A25REV. DATE:

O R

K A

R E

A V

A R

IE

S

S H

O U

L D

E R

S H

O U

L D

E R

KEY

D

B

L

1/3 L

1/3 L

L

D

D

PLACE THROUGHOUT WORK AREA AS

INDICATED AND AFTER ALL MAJOR

CROSSROADS IF PERMANENT SIGNS

ARE NOT IN PLACE.

PLACE THROUGHOUT WORK AREA AS

INDICATED AND AFTER ALL MAJOR

CROSSROADS IF PERMANENT SIGNS

ARE NOT IN PLACE.

LIGHTED ARROW PANEL

SPEED

LIMIT

R2-1

XX

W4-2

W20-1

ROAD

WORK

AHEAD

D D W20-5a

(MODIFIED)

CENTER

& LEFT LANE

CLOSED

AHEAD

SPEED

LIMIT

R2-1

XX

SPEED

LIMIT

R2-1

XX

W4-2

W20-1

ROAD

WORK

AHEAD

W20-5a

(MODIFIED)

CENTER

& LEFT LANE

CLOSED

AHEAD

SPEED

LIMIT

R2-1

XX

D D

D

REFLECTS EXISTING

SPEED LIMIT

(REQUIRED ON PLYWOOD SIGNS)

DURATION: SHORT-TERM STATIONARY

CLOSURE FOR THE CENTER LANE

AND ADJACENT THROUGH LANES

OF A MULTI-LANE UNDIVIDED ROADWAY,

NO SPEED REDUCTION 01/01/07

MD - 26a

A26REV. DATE:

O R

K A

R E

A V

A R

IE

S

S H

O U

L D

E R

S H

O U

L D

E R

KEY

D

D

B

L

1/3 L

1/3 L

L

D

D

PLACE THROUGHOUT WORK AREA AS

INDICATED AND AFTER ALL MAJOR

CROSSROADS IF PERMANENT SIGNS

ARE NOT IN PLACE.

PLACE THROUGHOUT WORK AREA AS

INDICATED AND AFTER ALL MAJOR

CROSSROADS IF PERMANENT SIGNS

ARE NOT IN PLACE.

END

ROAD WORK

LIGHTED ARROW PANEL

SPEED

LIMIT

R2-1

XX

WORK

ZONE

BEGINS

R5-18c

W4-2

W20-1

ROAD

WORK

AHEAD

D D

D D

D

W20-5a

(MODIFIED)

CENTER

& LEFT LANE

CLOSED

AHEAD

R5-18b

INJURE /

KILL A

WORKER

$7500 +

15 YEARS

R5-18

TRAFFIC

FINES

DOUBLED

IN WORK

ZONES

SPEED

LIMIT

R2-1

XX

END

ROAD WORK

SPEED

LIMIT

R2-1

XX

WORK

ZONE

BEGINS

R5-18c

W4-2

W20-1

ROAD

WORK

AHEAD

W20-5a

(MODIFIED)

CENTER

& LEFT LANE

CLOSED

AHEAD

SPEED

LIMIT

R2-1

XX

R5-18b

INJURE /

KILL A

WORKER

$7500 +

15 YEARS

R5-18

TRAFFIC

FINES

DOUBLED

IN WORK

ZONES

D D

D D

D 2D

2D

REFLECTS EXISTING

SPEED LIMIT

(REQUIRED ON PLYWOOD SIGNS)

DURATION: LONG-TERM STATIONARY

INTERMEDIATE-TERM STATIONARY

CLOSURE FOR THE CENTER LANE

AND ADJACENT THROUGH LANES

OF A MULTI-LANE UNDIVIDED ROADWAY,

NO SPEED REDUCTION 01/01/07

MD - 26b

A27REV. DATE:

O R

K A

R E

A V

A R

IE

S

S H

O U

L D

E R

S H

O U

L D

E R

KEY

D

B

L

1/3 L

1/3 L

L

LIGHTED ARROW PANEL

SPEED

LIMIT

R2-1

XX

W4-2

W20-1

ROAD

WORK

AHEAD

W20-5a

(MODIFIED)

CENTER

& LEFT LANE

CLOSED

AHEAD

SPEED

LIMIT

R2-1

XX

SPEED

LIMIT

R2-1

XX

W4-2

W20-1

ROAD

WORK

AHEAD

SPEED

LIMIT

R2-1

XX

(REQUIRED ON PLYWOOD SIGNS)

DURATION: SHORT-TERM STATIONARY

REDUCED

AHEAD

W3-5b

SPEED ZONE

D D

D

W20-5a

(MODIFIED)

CENTER

& LEFT LANE

CLOSED

AHEAD

REDUCED

AHEAD

W3-5b

SPEED ZONE

D D

D D

SPEED

LIMIT

R2-1

XX

D

SPEED

LIMIT

R2-1

XX

2D

REFLECTS SPEED LIMIT

BEYOND WORK AREA

PLACE THROUGHOUT WORK AREA

AS WARRANTED AND AFTER ALL

MAJOR CROSSROADS.

PLACE THROUGHOUT WORK AREA

AS WARRANTED AND AFTER ALL

MAJOR CROSSROADS.

CLOSURE FOR THE CENTER LANE

AND ADJACENT THROUGH LANES

OF A MULTI-LANE UNDIVIDED ROADWAY,

WITH MAXIMUM 10 MPH SPEED REDUCTION 01/01/07

MD - 26c

A28REV. DATE:

LIGHTED ARROW PANEL

SPEED

LIMIT

R2-1

XX

W4-2

R5-18b

INJURE /

KILL A

WORKER

$7500 +

15 YEARS

R5-18

TRAFFIC

FINES

DOUBLED

IN WORK

ZONES

WORK

ZONE

BEGINS

R5-18c

W4-2

W20-5a

(MODIFIED)

CENTER

& LEFT LANE

CLOSED

AHEAD

R5-18b

INJURE /

KILL A

WORKER

$7500 +

15 YEARS

R5-18

TRAFFIC

FINES

DOUBLED

IN WORK

ZONES

(REQUIRED ON PLYWOOD SIGNS)

DURATION: LONG-TERM STATIONARY

INTERMEDIATE-TERM STATIONARY

B W

O R

K A

R E

A V

A R

IE

S

S H

O U

L D

E R

S H

O U

L D

E R

D

D

B

L

1/3 L

1/3 L

L

D

D D

D D

D D

D D

D D

D

D

D

D D

D D

G20-2

END

ROAD WORK

G20-2

END

ROAD WORK

W20-1

ROAD

WORK

AHEAD

W20-5a

(MODIFIED)

CENTER

& LEFT LANE

CLOSED

AHEAD

REDUCED

AHEAD

W3-5b

SPEED ZONE

R5-18c

WORK

ZONE

BEGINS

SPEED

LIMIT

R2-1

XX

SPEED

LIMIT

R2-1

XX

SPEED

LIMIT

R2-1

XX

SPEED

LIMIT

R2-1

XX

SPEED

LIMIT

R2-1

XX

REDUCED

AHEAD

W3-5b

SPEED ZONE

W20-1

ROAD

WORK

AHEAD

PLACE THROUGHOUT WORK AREA

AS WARRANTED AND AFTER ALL

MAJOR CROSSROADS.

PLACE THROUGHOUT WORK AREA

AS WARRANTED AND AFTER ALL

MAJOR CROSSROADS.

REFLECTS SPEED LIMIT

BEYOND WORK AREA

CLOSURE FOR THE CENTER LANE

AND ADJACENT THROUGH LANES

OF A MULTI-LANE UNDIVIDED ROADWAY,

WITH MAXIMUM 10 MPH SPEED REDUCTION 01/01/07

MD - 26d

A29REV. DATE:

L

W O

R K

A R

E A

V A

R

IE

S

S H

O U

L D

E R

S H

O U

L D

E R

D D

W20-5

RIGHT LANE

CLOSED

AHEAD

W20-1

ROAD

WORK

AHEAD

W20-5

RIGHT LANE

CLOSED

AHEAD

W20-1

ROAD

WORK

AHEAD

SPEED

LIMIT

R2-1

XX

SPEED

LIMIT

R2-1

XX

SPEED

LIMIT

R2-1

XX

SPEED

LIMIT

R2-1

XX

SPEED

LIMIT

R2-1

XX

SPEED

LIMIT

R2-1

XX

REDUCED

AHEAD

W3-5b

SPEED ZONE

REDUCED

AHEAD

W3-5b

SPEED ZONE

W4-2 W4-2

DURATION: SHORT-TERM STATIONARY

D D

2D 2D

PLACE THROUGHOUT WORK

AREA AS WARRANTED AND

AFTER ALL ENTRANCE RAMPS

PLACE THROUGHOUT WORK

AREA AS WARRANTED AND

AFTER ALL ENTRANCE RAMPS

REFLECTS EXISTING SPEED LIMIT

(REQUIRED ON PLYWOOD SIGNS)

REFLECTS SPEED LIMIT

BEYOND WORK AREA

01/01/07

MD - 27c A30

ONE-LANE CLOSURE ON A FREEWAY

USING A SINGLE STEP DOWN IN

SPEED LIMIT WHERE EXISTING

SPEED LIMIT IS 55 MPH REV. DATE:

W O

R K

A R

E A

V A

R

IE

S

S H

O U

L D

E R

S H

O U

L D

E R

D D

D D

W20-5

RIGHT LANE

CLOSED

AHEAD

W20-1

ROAD

WORK

AHEAD

W20-5

RIGHT LANE

CLOSED

AHEAD

W20-1

ROAD

WORK

AHEAD

KEY

LEGEND REFLECTS SPEED

LIMIT BEYOND WORK AREA

2D D

WORK

ZONE

BEGINS

R5-18c

SPEED

LIMIT

R2-1

XX

SPEED

LIMIT

R2-1

XX

SPEED

LIMIT

R2-1

XX SPEED

LIMIT

R2-1

XX

SPEED

LIMIT

R2-1

XX

SPEED

LIMIT

R2-1

XX

WORK

ZONE

BEGINS

R5-18c

REDUCED

AHEAD

W3-5b

SPEED ZONE

REDUCED

AHEAD

W3-5b

SPEED ZONE

2D

W4-2 W4-2

LIGHTED ARROW PANEL

D D

R5-18

TRAFFIC

FINES

DOUBLED

IN WORK

ZONES

R5-18b

INJURE /

KILL A

WORKER

$7500 +

15 YEARS

R5-18b

INJURE /

KILL A

WORKER

$7500 +

15 YEARS

G20-2

END

ROAD WORK

G20-2

END

ROAD WORK

D

R5-18

TRAFFIC

FINES

DOUBLED

IN WORK

ZONES

ONE-LANE CLOSURE ON…