A00815 WORK ZONE SAFETY TEMPORARY TRAFFIC CONTROL~58.pdf

Temporary Traffic Control

Typical Details and Massachusetts Guidelines for MassDOT, Municipalities, Utilities, and Contractors

WORK

ZONE

SAFETY

DOCUMENT A00815

Proposal No. 613202-129788

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SHEET INDEX (1 OF 3)

GENERAL PAGE

NOTES AND GUIDELINES...............................................................1-9

FIG. 1: TYPICAL TRAFFIC CONTROL DEVICES

FIG. 2: PAVEMENT EDGE DROP-OFF GUIDANCE

FIG. 3: TYPICAL DEVICE SPACING; (AT 30 MPH)..........................12-13

FLAGGING GUIDANCE.....................................................................14-15

FIG. 4-5: TYPICAL PEDESTRIAN DEVICES....................................16-17

STATIONARY OPERATIONS

FIG. 6: TWO LANE UNDIVIDED ROADWAY; HALF OF

ROADWAY CLOSED; WORK NEAR CURVE.............................. 18-19

FIG. 7: TWO LANE UNDIVIDED ROADWAY; HALF OF

ROADWAY CLOSED.................................................................... 20-21

FIG. 8: TWO LANE UNDIVIDED ROADWAY; SHOULDER

CLOSED........................................................................................22-23

FIG. 9: TWO LANE UNDIVIDED ROADWAY WITH

TRAVERSABLE SHOULDER; HALF OF ROADWAY CLOSED;

MAINTAIN TWO-WAY TRAFFIC.................................................. 24-25

FIG. 10: FOUR LANE UNDIVIDED ROADWAY; RIGHT LANE

CLOSED........................................................................................26-27

FIG. 11: FOUR LANE UNDIVIDED ROADWAY; LEFT LANE

CLOSED........................................................................................28-29

FIG. 12: FOUR LANE UNDIVIDED ROADWAY; HALF OF

ROADWAY CLOSED.................................................................... 30-31

FIG. 13: MULTILANE DIVIDED ROADWAY; RIGHT LANE

CLOSED........................................................................................32-33

FIG. 14: MULTILANE DIVIDED ROADWAY; LEFT LANE

CLOSED........................................................................................34-35

FIG. 15: MULTILANE DIVIDED ROADWAY; CENTER LANE OR

RIGHT/CENTER LANES CLOSED............................................... 36-37

FIG. 16: MULTILANE DIVIDED ROADWAY; CENTER LANE OR

LEFT/CENTER LANES CLOSED..................................................38-39

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SHEET INDEX (2 OF 3)

STATIONARY OPERATIONS (CONT.) PAGE

FIG. 17: MULTILANE DIVIDED ROADWAY; RIGHT SIDE OF

OFF RAMP CLOSED.................................................................... 40-41

FIG. 18: MULTILANE DIVIDED ROADWAY; LEFT SIDE OF

OFF RAMP CLOSED.................................................................... 42-43

FIG. 19: MULTILANE DIVIDED ROADWAY; ROADWORK

BEYOND ON RAMP......................................................................44-45

FIG. 20: MULTILANE DIVIDED ROADWAY; ROADWORK

BEYOND OFF RAMP.................................................................... 46-47

FIG. 21: MULTILANE DIVIDED ROADWAY; TYPICAL RAMP

CLOSURE......................................................................................48-49

FIG. 22: MULTILANE DIVIDED ROADWAY; TYPICAL

CLOVERLEAF RAMP CLOSURE................................................. 50-51

FIG. 23: MULTILANE DIVIDED ROADWAY; TYPICAL RAMP

CLOSURE; ADVANCE SIGNING..................................................52-53

FIG. 24: FOR MULTILANE DIVIDED ROADWAY; PLACEMENT

OF TEMPORARY PORTABLE RUMBLE STRIPS........................54-55

MOBILE OPERATIONS

NOTES FOR MOBILE OPERATIONS

FIG. 25: ANY ROADWAY; BEYOND RIGHT SHOULDER

FIG. 26: ANY ROADWAY; SHOULDER

FIG. 27: DIVIDED ROADWAY; MEDIAN WORK

FIG. 28: UNDIVIDED TWO LANE ROADWAY; HALF OF

ROADWAY CLOSED

FIG. 29: MULTILANE DIVIDED ROADWAY; LEFT LANE

FIG. 30: MULTILANE DIVIDED ROADWAY; RIGHT LANE

FIG. 31: MULTILANE DIVIDED ROADWAY; CENTER LANE

FIG. 32: POST-STORM CLEANUP OPERATION

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SHEET INDEX (3 OF 3)

EMERGENCY RESPONSE PAGE

NOTES FOR TRAFFIC EMERGENCY/INCIDENT OPERATIONS... 65

FIG. 33: ANY ROADWAY; SHOULDER ENCROACHMENT

FIG. 34: TWO LANE ROADWAY; NO SHOULDER; TRAVEL

LANE ENCROACHMENT

FIG. 35: TWO LANE ROADWAY; TRAVERSABLE SHOULDER;

SINGLE LANE ENCROACHMENT

FIG. 36: TWO LANE ROADWAY; TRAVERSABLE SHOULDER;

CENTER OF ROADWAY

FIG. 37: MULTILANE DIVIDED ROADWAY; RIGHT LANE

FIG. 38: MULTILANE DIVIDED ROADWAY; LEFT LANE

FIG. 39: MULTILANE UNDIVIDED ROADWAY; LEFT LANE

FIG. 40: MULTILANE DIVIDED ROADWAY; MIDDLE LANE;

APPROACH FROM LEFT

FIG. 41: MULTILANE DIVIDED ROADWAY; MIDDLE LANE;

APPROACH FROM RIGHT

TRAFFIC SIGNAL REPAIR WORK AT INTERSECTION

FIG. 42: MULTILANE UNDIVIDED ROADWAY; LEFTMOST OR

LEFT TURN LANE

FIG. 43: TWO LANE UNDIVIDED ROADWAY; ONE LEG OF

INTERSECTION

FIG. 44: MULTILANE UNDIVIDED ROADWAY; CENTER OF

INTERSECTION

PEDESTRIAN DETAILS

FIG. 45: PEDESTRIAN BYPASS

FIG. 46: TEMPORARY SIDEWALK CLOSURE

BIKE LANE DETAILS

FIG. 47: BIKE LANE CLOSURE........................................................ 80-81

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INTRODUCTION

This guide has been prepared to assist in the planning and installing of temporary traffic controls in maintenance, utility, or short-term construction work areas (work lasting 10 hours or less). This guide serves to assist with the many decisions that must be made for each work site. Special planning for traffic control is necessary on a case by case basis because conditions can vary widely among work locations. Since this guide cannot cover every situation, representative illustrations covering typical short-term construction, maintenance, and utility operations are presented.

All typical traffic control device setups illustrated should be considered as guides. The traffic control devices that are shown, the arrangement or position of the devices, and the distances prescribed in the tables are based on the Federal Highway Administration's (FHWA) Manual on Uniform Traffic Control Devices (MUTCD) and the Massachusetts Amendments to the MUTCD (MA Amendments), but these illustrations only present minimum standards. The provision of safe work zones for all roadway users and roadway workers affected by these activities is paramount. Traffic controls may be expanded or improved upon whenever deemed necessary. Traffic movement through the work site all traffic control devices shall be periodically observed and inspected at all locations.

If necessary, Part 6 of the MUTCD and the MA Amendments, Chapter 17 (Work Zone Management) of MassDOT's Project Development & Design Guide, and the Engineering and Safety of the MassDOT web site: (https://www.massdot.state.ma.us/highway/Departments/TrafficandSafetyEngineering.aspx), as well as MassDOT District offices can provide additional guidance, information, and suggestions for work zone setups.

RESPONSIBILITIES FOR TRAFFIC CONTROL

Short-term construction, maintenance, and utility work on or near the roadway creates a potentially hazardous situation, typically requiring the use of temporary traffic controls. These controls are important to protect both work crews and the road users. It is the responsibility of each maintenance foreman to establish and maintain safe and effective controls.

Usually the supervisor, working with the crew, plans the traffic control procedures for proposed work sites. The foreman is responsible for re-questing, storing, and maintaining all traffic control devices necessary for their crews.

The foreman is responsible for placing the devices according to these guidelines. They must inspect each installation and observe traffic flow through the area. The foreman is generally authorized to make adjustments to the original installations that, in their judgment, are necessary to improve the control of traffic and establish greater safety.

All necessary traffic control devices must be installed before work begins and properly maintained during the work period. They must also be removed as soon as they are no longer relevant to the roadway conditions.

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In situations such as night time road or lane closures, detours, or other unusual conditions on state highways, the District Traffic Maintenance Engineer (DTME) should be advised. If the DTME is absent, the section foreman shall follow the instructions of the District Maintenance Engineer.

TRAFFIC CONTROL DEVICES

Traffic control devices regulate the movement of road users, warn of unexpected or unusual roadway conditions, and inform them how to maneuver safely through or around the work area. All signs, channelizing devices, barricades, and other miscellaneous traffic control devices should work together to guide traffic safely and efficiently. Common temporary traffic control devices are outlined and described below.

Signs Temporary traffic control zone (TTCZ) signs are the primary means of providing information and directions to roadway users. All signs must be retroreflective per MassDOT's latest standard.

Warning signs call attention to unexpected conditions and to situations that might not be readily apparent to road users on or adjacent to a roadway.

Warning signs alert road users to conditions that might call for a reduction of speed or an action in the interest of safety and efficient traffic operations.

Nearly all warning signs for construction and work areas have black legends and borders on a fluorescent orange background.

Regulatory signs shall be used to inform road users of selected traffic laws or regulations and indicate the applicability of the legal requirements. Regulatory signs typically have black legends and borders on a white background.

Channelizing Devices When used properly, traffic cones, reflectorized plastic drums, and barricades guide traffic through the work area along an appropriate travel path. It takes roadway users a certain distance along the roadway to safely move away from the upcoming active work site. These transition distances are based on the following taper length (L) formulas:

L = WS for speeds of 45 mph or more; where L = minimum length of taper in feet, S = posted speed limit or typical travel speed in miles per hour prior to the work, and W = width of lane closure in feet.

The spacing of channelizing devices (in feet) is approximately equal to the existing speed of traffic (in mph).

Warning Lights Rotating beacons and other flashing lights mounted on work vehicles, signs, or channelizing devices help alert roadway users to the work area. They may also be used to warn roadway users of hazards within the work area. The first 10 drums in any taper shall be equipped with sequential flashing lights.

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Arrow Boards Arrow boards are a special type of sign that are highly visible work zone warning devices. They are particularly effective on highways, where both speed and volume are high. Arrow boards in the non-directional, CAUTION, mode (four corner flashing) may be used to indicate that a shoulder is closed.

Arrow boards in the arrow mode shall only be used when a travel lane is dropped on a multi-lane road and one lane of traffic must merge with another.

All arrow boards should be located at the beginning of each lane or shoulder closure taper without extending outside of it. Arrow boards shall flash at a rate of 25 to 40 flashes per minute. Arrow boards shall not be used to indicate a lane shift.

BASIC REQUIREMENTS

In every work situation, the temporary traffic control setup must: Give roadway users sufficient advance warning of the work area; advise roadway users of the proper actions to take and travel paths to follow; and provide protection to roadway users, workers, and the work area. These three general requirements can be met as outlined below.

Provide Advance Warning Warning devices along the approaches to a work area alert roadway Users to changes to road and operating conditions. Roadway users are usually alerted to these dangers via a sign or series of signs installed in the same order as the roadway user generally would expect to see them on long-term construction projects.

The initial project limit sign is usually a general warning such as WORK 1500 Other operational warning signs then provide the roadway user with more specific information about the situation. A minimum of three advance warning signs (the initial project limit sign and two operational warning signs) is recommended when work is located on the traveled way.

Warning lights and flags can be used to attract attention to the signs. A highly visible work area helps reinforce the advance warnings.

Advise and Direct Travelers Operational warning signs provide information to the road-way user such as the type of work being performed, special conditions to watch for, or actions to take. These include signs such as, SHOULDER WORK, RIGHT LANE CLOSED, DETOUR 500 FT, ROAD CLOSED to THRU TRAFFIC, POLICE OFFICER AHEAD, etc. All of these signs must be located far enough in advance of the work area that the roadway user has sufficient time to react to them appropriately. For projects in Urban Areas, see detail: Typical Device Spacing for minimum sign spacing.

Protect Travelers, Workers, and the Work Area The primary protection of any work area is its own visibility. Traffic cones, reflectorized plastic drums, portable breakaway barricades, etc. are used to make the work area visible and separate workers from traffic.

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Other devices, such as flashing lights, flags, delineators, temporary lighting, and portable changeable message signs (PCMS) can be used to provide additional emphasis and visibility.

Workers must protect themselves by being alert to their work situation, wearing safety vests and hard hats, and by facing traffic whenever possible.

Work vehicles can also add protection when they are equipped with truck mounted attenuators, rotating beacons, flashing lights, flashing arrow boards, etc. and are parked between workers and oncoming traffic. However, workers should not position themselves between two closely parked vehicles. No private personal vehicles are allowed within the work site.

PLANNING GUIDELINES

Decisions regarding selection of work area traffic control devices require a knowledge and understanding of the specifics of each work zone. As there may be vast differences between situations, three main variables need to be considered prior to determining the need for, or the selection of, traffic control devices: 1) location of work, 2) type of roadway, and 3) speed of traffic.

Compiling information about these variables will help with planning a safe work area control. Each of these variables is explained below.

Location of Work The choice of traffic controls needed for a short-term construction, maintenance, or utility operation depends upon the work zone's location. As a general rule, the closer the active work site is to the roadway, the more control devices are needed. Work can take place:

Away from the shoulder or edge of pavement. No special devices are needed if work is confined to an area 15 or more feet from the edge of the shoulder. A general warning sign, such as ROAD WORK AHEAD, should be used if workers and equipment must occasionally move closer to the roadway.

On or near the shoulder/ edge of pavement. This area should be signed as if work were on the road itself, since it is part of the roadway users' recovery area. Advance warning and operational signs are needed, as well as channelization devices to direct traffic and keep the work area visible to roadway users.

On the median of a divided highway. Work in this location may require traffic control in both directions of traffic. Advance warning and channelization devices should be used if the median is narrow.

On the roadway. This condition requires detailed protection for workers and sufficient warning to roadway users. Advance warning must provide a general message that work is taking place as well as information about specific hazards and specific actions the roadway user must take.

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TYPE OF ROADWAY

The characteristics of the roadway also have an important influence on the selection of work area traffic control. The roadway, itself, may present special hazards. You should plan for maximum protection, using the worst hazard present as your guide to signing the work area. Some general considerations are described below for road conditions.

One-way roads: A one-way road requires signage on both sides of the road if it carries two or more lanes in one direction, ensuring roadway users in all lanes are alerted and informed.

Two-way roads:

Undivided: Two-way, undivided roads will usually require controls for both directions of traffic. When the active work site is well off the roadway, controls for the opposite lane may be eliminated.

Divided: Work on divided multi-lane roadways can often be handled as work along a one-way road (i.e. signs are provided along both sides of the roadway along the direction affected). If the work is in the median, both directions of traffic must be controlled, and both approaches should be double signed (i.e. have all 3 advance warning signs on both sides of each direction).

EFFECTS OF SPEED ON WORK ZONES

Speed is an important consideration in the use of work area traffic control devices. As a general rule, the greater the speed of traffic approaching a work area, the greater the size, number, and spacing of control devices.

Size. The standard size for most warning signs is 36 x 36 inches on conventional roadways and 48 x 48 inches on freeways and expressways.

Signs larger than the standard 36 x 36 inches may be desirable on high-speed conventional roads.

Position. Install signs far enough in advance of the work area so the roadway users have time to react to them (see charts associated with diagrams for spacing).

OTHER FACTORS

Sight Obstructions. To ensure safety, work areas must be visible. Assess the placement of the temporary traffic control devices by driving through the area, and determine if the devices can be easily seen and provide sufficient time for roadway users to react in a safe manner. Extra precaution should be enacted in areas where horizontal or vertical curves may obstruct a roadway user's clear view of road activities ahead.

Police/Flaggers. It should be noted that the MUTCD does not require police/ flaggers for stationary setups. If police/flaggers are used, a police/flagger ahead sign should be used in advance of any point where the police/flagger is stationed to control road users.

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PROCEDURES FOR WORK AREA TRAFFIC CONTROL

1. PLAN YOUR WORK

Inspect location of work area and its surroundings.

Analyze:

Location of work in relation to the traveled way, intersecting road-ways, driveways, and sight distances;

Type of roadway and traffic involved; and Volume and speed of traffic.

Meet and discuss the work and necessary traffic control with the crew.

Study representative illustrations in this guide to develop a temporary traffic control plan (TTCP).

Other Considerations:

Base your traffic control plan on the premise that all roadway users are unfamiliar with the area.

The closer the work area location is to traffic, the more controls are needed.

Plan for maximum protection.

Select and inspect the temporary control devices needed (including all warning signs), if they are not in good condition, REPLACE THEM!

Then collect and transport them to the work site.

Determine their proper placement.

Install signs and other traffic control devices prior to allowing personnel or equipment onto the roadway.

Make sure signs are reflective, accurate, clean, and meet specifications.

Completely cover any existing permanent signs that will conflict with the messages of the new work area control signs.

2. INSTALLING/REMOVING TEMP. TRAFFIC CONTROL DEVICES

Care must be exercised when installing and removing temporary traffic control (TTC) devices. The traffic control needed to perform the operation safely is dictated by the location on the roadway the operation will occur: in a shoulder or a lane, in the left lane or right, etc. In all cases, installing TTC begins and ends as a mobile operation.

A shadow vehicle with a truck mounted attenuator (TMA) shall be used to protect workers installing and removing TTC devices on all roadways with a posted speed limit of 45 MPH or greater as directed by the engineer. TTC devices shall not be installed or removed from a shadow vehicle with a TMA.

TTC devices shall be installed or removed from a work operation vehicle only and a shadow vehicle with a TMA shall be used to protect the workers installing or removing the devices.

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PROCEDURES FOR WORK AREA TRAFFIC CONTROL (CONT.)

3. INSTALL TRAFFIC CONTROL DEVICES AT WORK SITE

1) All devices shall be installed in order with the flow of traffic.

2) Where one direction of traffic is being affected, the first sign installed should be the sign farthest from the work site, and on the same side as the work.

3) Where two directions of traffic are affected, install signs for opposing traffic first, starting with the sign farthest from the work area. When signs for opposing traffic have been installed, install signs on the same side as the work area, again beginning with the sign farthest from the active work site.

4) Once signs are in place, other traffic control devices shall be installed in the same manner as the signs.

ROADWAYS:

1) All devices shall be installed in order with the flow of traffic.

2) Install all advance warning signs, beginning with the ROAD WORK XXX (W20-1) sign and ending with the END ROAD WORK/DOUBLE FINES END (MA-R2-10E) sign.

3) Install all signs beginning with the opposite side which will be closed (for a right lane closure; first, install all signs on the left side (shoulder) and then install all signs on the right side (shoulder). No signs shall be erected on the roadway unless delineated by traffic control devices.

4) If required, install shoulder taper as the mobile operation advances.

5) Install arrow board on the shoulder prior to the merging taper or as close to the beginning of the merging taper as possible.

6) Install channelizing devices to form a merging taper. Use of a shadow vehicle with a TMA during installation is required on roads with speed limits of 45 MPH or greater or as directed by the Engineer.

7) Install traffic control devices along the buffer space at the appropriate spacing.

8) Continue placing devices along the work space at the appropriate spacing.

9) Install devices for the termination area as necessary.

10) Place the shadow vehicle with a TMA in advance of the first work crew or hazard approached by motorists. Multiple shadow vehicles may be required based on the number of lane and shoulder closures implemented.

4. INSPECT WORK AREA SIGNING AND CONTROL DEVICES

1) Assess the placement of the temporary traffic control devices by driving through the work area. All approaches to the work zone should be checked.

2) Ensure roadway users will have sufficient time to read signs and react in a safe manner.

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3) Check visibility of entire work area. If approaching roadway users can't see the work area well, or if they can't see ahead to traffic that may already be queued on the approach because of the work, additional traffic control devices should be deployed.

4) Check to ensure the proper temporary traffic control devices are positioned to protect workers from traffic (where possible).

5) Ensure all workers wear safety vests, hard hats, and all other necessary safety equipment. All worker safety gear should be in good condition. All reflective gear should be clean and highly visible in the dark.

6) Record in the log book the number and location of all signs and devices.

Considerations:

Work area signs should never be blocked from view or obscured by vegetation, existing signs, or other obstructions.

Flags, flashing lights, and edge line traffic cones can be used to improve visibility.

5. REMOVE TRAFFIC CONTROL DEVICES AT WORK SITE

All workers and equipment should be clear from work site BEFORE removing signs and other devices.

1) Remove signs and other devices within the delineated area when work is complete.

2) Remove other traffic control devices in the reverse order in which they were installed

3) Remove signs in the reverse order in which they were installed (i.e. sign closest to the work area to be removed first).

4) When the operation is complete, uncover any existing permanent signs covered in Step 2.

5) Record in the log book the time at which the signs were removed.

ROADWAYS:

All TTC devices for a stationary lane closure on a multi-lane roadway, except advance warning signs, should be removed against the flow of traffic in the following sequence:

1) Remove the channelizing devices starting from the end of the activity area working back to the widest part of the merging taper.

2) A shadow vehicle with TMA shall be positioned to protect workers removing devices and work backwards as the setup is removed from the roadway.

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3) Place the removal vehicle on the shoulder, and remove the channelizing devices from the merging taper by hand onto the work vehicle.

4) Remove the arrow board once traffic is clear and it is safe to do so.

5) Circle back and moving with the flow of traffic, remove the advance warning signs starting with the opposite side from previous lane closure first.

6) At no time shall workers run across the multilane roadway to remove signs on both sides of the road simultaneously.

7) Record in the log book the time at which the signs were removed

RAMP FACILITIES

At all times it is necessary to control the on and off-ramp traffic during the installation and breakdown of traffic control devices. Use of temporary traffic slow-downs or rolling roadblocks is recommended to allow for the safety of workers handing temporary traffic control devices on ramp facilities. A shadow vehicle with a TMA shall be used to protect the workers installing or removing the devices. At no time shall the work operation vehicle be used as the shadow vehicle with the TMA.

USE OF THIS GUIDE

Illustrations showing minimum standards for short-term construction, maintenance, and utility operations are arranged in this guide by type of operation. The users of this guide should compare all illustrated examples and examine their differences. After gathering information about the work zones using the general guidelines as outlined, proceed as follows:

1) Turn to the Index. Consider the type of operations and the type of roadway upon which work will occur.

2) Select the figure that most closely matches the conditions where you plan to work. Remember that all diagrams represent minimum standards.

3) Read the title of the illustration to ensure that it is appropriate to your location. Study the layout of traffic control devices and read all notes.

4) Consult the appropriate tables, as directed on each illustration to determine taper length and proper spacing of signs. Notice that distances change when speeds change. Also note that these are guidelines, only, and they must be adapted to your specific work area.

5) Use the FOR WORK AREA TRAFFIC for assistance in completing all necessary steps to provide effective and safe work area traffic control.

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FIGURE 1

TYPICAL TRAFFIC CONTROL DEVICES

NOT TO SCALE

Work Zone Safety Standard Details and Drawings

TYPE III BARRICADE

CONESDRUM

Cones may be used for all daytime operations. For night work, drums should be used to form the taper(s) and cones can be used along the tangent section of the work setup.

6"

18"

MIN.

4"

6"

4"

6"

RETROFLECTIVE

BANDS

M

IN

48" MIN.

8"

2"

21 345678 21 345678 21 345678

SIGN

21 345678 21 345678 21 345678

ROAD

WORK

XXX

ARROW BOARD (WITH MODE)

CAUTIONLEFT RIGHT

PORTABLE CHANGEABLE

MESSAGE SIGN (PCMS)

Truck Mounted Attenuators (TMA) shall be positioned between the start of the work area and the end of the designated buffer zone. The TMAs are to be positioned in each temporarily closed lane. This includes shoulders feet) whether combined with a travel lane closure or being closed alone. These TMA conditions are required on roadways with speeds of 45 MPH or greater. TMAs can be used on other roadways at the discretion of the engineer. TMAs shall be used for the deployment and removal of all traffic control devices, including all advance warning signs.

TRUCK MOUNTED ATTENUATORS

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FIGURE 2

PAVEMENT EDGE

DROP-OFF GUIDANCE

NOT TO SCALE

Work Zone Safety Standard Details and Drawings

Note that this guidance is adopted from the Roadside Design Guide, 4th Edition.

Pavement drop-offs may occur during paving, excavation, and other construction activities.

Drop-offs create hazards for vehicles if not properly mitigated. The following applies for all roads with speed limits greater than 30 mph; for roads with speed limits of 30 mph or less, treatments for pavement edge drop-offs are at the discretion of the Engineer. Drop-offs between adjacent, open travel lanes should not exceed 2", and any drop-off in excess of 3" should not be left unattended without one of these mitigation measures applied.

Shoulder drop-offs 3" or less adjacent to a shoulder or active travel lane should be mitigated by:

A W8-9 (LOW SHOULDER) sign in advance of and at regular intervals throughout the treatment; or The placement of drums on the traffic side of the drop-off.

Shoulder drop-offs greater than 3" but less than or equal to 36" should be mitigated by:

A W8-9 (LOW SHOULDER) sign in advance of and at regular intervals throughout the treatment and the placement of drums on the traffic side off the drop-off, offset at least 3' from the travel lane; or A W8-9 (LOW SHOULDER) sign in advance of and at regular intervals throughout the treatment and the placement of a temporary wedge of material along the face of the drop-off. The wedge should consist of stable material placed on a 2H:1V or flatter slope.

Shoulder drop-offs greater than 36" must be protected by temporary barrier.

SHORT-TERM PAVEMENT EDGE DROP-OFFS

3' (MIN.)

D.O. 3"

EDGE LINETRAVEL

LANE

D.O. 3"

EDGE LINETRAVEL

LANE

LOW

SHOULDER W8-9

TRAVEL

LANE

EDGE LINETRAVEL

LANE

D.O. > 3" D.O. 36"

3' (MIN.)

LOW

SHOULDER W8-9

2H:1V WEDGE

(OR FLATTER)

LOW

SHOULDER W8-9

D.O. > 36"

TRAVEL

LANE

TEMPORARY

BARRIER

D.O. > 3" D.O. 36"

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TYPICAL DEVICE SPACING

ROAD TYPE

MINIMUM SPACING OF ADVANCE WARNING

DISTANCE BETWEEN SIGNS

URBAN (LOW SPEED)

URBAN (HIGH SPEED)

100 FT

350 FT

SIGNS FOR URBAN ROADWAYS

POSTED

SPEED

LIMIT

(MPH)

SPACING FOR

ADVANCE WARNING

SIGNS (FT)

(A,B,C)

CHANNELIZATION DEVICES (DRUMS OR CONES)

TRAVEL

LANE

CLOSURE

LENGTH

(L) (FT)

BUFFER

ZONE

LENGTH

(FT)

DEVICE

SPACING

(FT)

MIN

# OF

DEVICES*

25-40 500 / 500 / 500 320 305 20 55

45-55 500 / 1000 / 1000 660 495 40 40

60-65 1000 / 1600 / 2600 780 645 40 50

Work Zone Safety Standard Details and Drawings

* NUMBER OF DEVICES BASED ON 400 FT WORK ZONE.

NOTES

1. 40 FT = 10 FT PAVEMENT MARKING + 30 FT SKIP

NOT TO SCALE

CHANNELIZATION DEVICE

WORK ZONE

FLASHING ARROW BOARD

TRUCK MOUNTED ATTENUATOR

RADAR SPEED FEEDBACK BOARD

POLICE DETAIL OR UNIFORMED FLAGGERP/F

TEMPORARY PORTABLE RUMBLE STRIP

LEGEND

TYPE III BARRICADE

PORTABLE CHANGEABLE MESSAGE SIGN

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FIGURE 3

TYPICAL DEVICE SPACING

(AT 30 MPH)

IN THE TAPER,

DEVICES ARE NO MORE

THAN 20 FT. APART

IN THE TANGENT SECTION

APPROACHING AND ADJACENT TO

THE WORK ZONE, DEVICES CAN

BE NO MORE THAN 40 FT. APART

12' LANE

TAPER = 320'

Work Zone Safety Standard Details and Drawings

DOWNSTREAM TAPER

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FLAGGING GUIDANCE

Work Zone Safety Standard Details and Drawings

Guidance for Flagging Operations

NOTE:

A flagger shall always be aware of their surroundings and have a good escape route. A flagger shall never be positioned directly beside or against construction equipment. When a flagger is required to direct traffic in an area where the escape route is partially blocked by a traversable obstruction such as a guardrail, the flagger shall be physically capable of traversing that obstruction. Prior to commencing a project, the supervisor in charge shall review the project, including guardrail areas, for safe flagging stations. The supervisor in charge shall clearly communicate with the flagger(s), indicating any locations where they cannot safely perform their duties.

Each flagger shall be equipped with the following high visibility clothing, signaling, and safety devices:

1) A white protective hard hat with a minimum level of reflectivity per the requirements of ANSI, Type I, Class E&G;

2) A clean, unfaded, untorn lime/yellow reflective safety vest and pants meeting the requirements of ANSI 107 Class 3 with the words "Traffic Control" on the front and rear panels in minimum two (2) inch (50 millimeter) high letters;

3) A 24 inch "STOP/SLOW" traffic paddle conforming to the requirements of Part 6E.03 of the Manual on Uniform Traffic Control Devices (MUTCD), a weighted, reflectorized red flag, flagger station advance warning signage, and two-way radios capable of providing clear communication within the work zone between flaggers, the Contractor, and the Engineer. The traffic paddle shall be mounted on a pole of sufficient length to be seven feet above the ground as measured from the bottom of the paddle;

4) A working flashlight with a minimum of 15,000 candlepower and a six inch red attachable wand, a whistle with a working lanyard, and a First Aid kit that complies with the requirements of ANSI Z308.1; and

5) An industrial/safety type portable air horn that complies with the requirements of the U.S. Coast Guard.

A00815 - 18

SLOW

SLOW

STOP

MINIMUM

24 IN

A "STOP/SLOW" paddle should be the primary hand-signaling device. It shall have an octagonal shape on a rigid handle. Flag use should be limited to emergency situations.

Properly Trained Flaggers Give clear messages to drivers.

Allow distance for drivers to react.

Coordinate with other flaggers.

Use standard signaling methods.

Properly Equipped Flaggers Use approved stop/slow paddles.

Use approved safety apparel.

Use retroreflective equipment.

Use hand held radios, as needed.

All flaggers shall wear safety apparel that meets ANSI Class 3 requirements. The combination of vest and pants is required.

Proper Flagging Stations Good approach sight distance.

Highly visible to traffic.

Stand alone away from other machinery and people.

Stand on right edge of pavement or shoulder- proceed to centerline only when first vehicle has come to stop.

Have a good escape route.

Proper Advance Warning Signs Always use warning signs.

Allow for reaction distance from signs.

Remove signs if no longer necessary or not flagging.

Use free hand in up-and-down motion to help slow traffic.

TO

STOP

TRAFFIC

TO LET

TRAFFIC

PROCEED

TO ALERT

AND SLOW

TRAFFIC

FIGURE ----

FLAGGING GUIDANCE

Work Zone Safety Standard Details and Drawings

A00815 - 19

FIGURE 4

TYPICAL PEDESTRIAN DEVICES

(1 OF 2)

NOT TO SCALE

Work Zone Safety Standard Details and Drawings

TEMPORARY CURB RAMP-PERPENDICULAR TO CURB

TEMPORARY CURB RAMP-PARALLEL TO CURB

OPTIONAL 2-4 IN. WIDE CONTRAST EDGE MARKING

YELLOW NON-SLIP PROTECTION (TYP)

CURB

6 IN REVEAL (TYP)

CLEAR SPACE

JOINT/GAP TREATMENT 60x60 IN. MIN.

TURNING AREA

PROTECTIVE EDGING

2 IN. MIN. HEIGHT

DETECTABLE EDGING

6 IN. MIN. HEIGHT

1 IN.

12 IN. MIN.

CURB

6 IN REVEAL (TYP)

JOINT/GAP TREATMENT

OPTIONAL 2-4 IN. WIDE CONTRAST EDGE MARKING

PROTECTIVE EDGING

2 IN. MIN. HEIGHT

12 IN. MIN.

1 IN.

2.0% SLOPEMAX

2 IN. MIN.

NOTES:

1. CURB RAMPS SHALL BE 60 IN. MINIMUM WIDTH WITH A FIRM, STABLE, AND NON-SLIP

SURFACE.

2. PROTECTIVE EDGING WITH A 2 IN. MINIMUM HEIGHT SHALL BE INSTALLED WHEN THE

CURB RAMP OR LANDING PLATFORM HAS A VERTICAL DROP OF 6 IN. OR GREATER OR

HAS A SIDE APRON SLOP STEEPER THAN 1:3 (33%). PROTECTIVE EDGING SHOULD BE

CONSIDERED WHEN THE CURB RAMPS OR LANDING PLATFORMS HAVE A VERTICAL

DROP OF 3 IN. OR MORE.

3. PROTECTABLE EDGING WITH 6 IN. MINIMUM HEIGHT AND CONTRASTING COLOR SHALL

BE INSTALLED ON ALL CURB RAMP LANDINGS WHERE THE WALKWAY CHANGES

DIRECTION (TURNS).

4. THE CURB RAMP WALKWAY AND LANDING AREA SURFACE SHALL BE OF A SOLID

CONTINUOUS CONTRASTING COLOR ABUTTING UP TO THE EXISTING SIDEWALK.

5. CURB RAMPS AND LANDINGS SHOULD HAVE A 1:50 (2%) MAX CROSS-SLOPE.

6. CLEAR SPACE OF 48x48 IN. MINIMUM SHALL BE PROVIDED ABOVE AND BELOW THE

CURB RAMP.

7. WATER FLOW IN THE GUTTER SYSTEM SHALL HAVE MINIMAL RESTRICTION.

8. LATERAL JOINTS OR GAPS BETWEEN SURFACES SHALL BE LESS THAN 0.5 IN. WIDTH.

9. CHANGES BETWEEN SURFACE HEIGHTS SHOULD NOT EXCEED 0.5 IN. LATERAL EDGES

SHOULD BE VERTICAL UP TO 0.25 IN. HIGH, AND BEVELED AT 1:2 BETWEEN 0.25 IN. AND

0.5 IN. HEIGHT.

10.IF A TEMPORARY PEDESTRIAN RAMP LEADS TO A CROSSWALK, THEN A DETECTABLE

WARNING PAD MUST BE ADHERED TO THE BASE OF THE RAMP. IF IT LEADS TO A

PROTECTED PEDESTRIAN BYPASS THAT DOES NOT CONFLICT WITH VEHICULAR

TRAFFIC, THEN A PAD SHALL NOT BE INSTALLED ON THE RAMP.

YELLOW NON-SLIP

PROTECTION (TYP)

DETECTABLE WARNING

PANEL

DETECTABLE WARNING

PANEL

A00815 - 20

FIGURE 5

TYPICAL PEDESTRIAN DEVICES

(2 OF 2)

NOT TO SCALE

PEDESTRIAN CHANNELIZING DEVICE

TEMPORARY CURB RAMP

EXISTING SURFACE

PORTABLE WALKWAY

TEMPORARY CURB RAMP

48 IN MIN LANDING AREA

3:1 MAX SLOPE INTO GUTTER

WITHOUT EDGE PROTECTION

PROTECTIVE EDGE

GROUND SURFACE

CURB

EXISTING SIDEWALK

TURNING AREA

GROUND SURFACE

CURB

LANDING

PORTABLE

WALKWAY

DETECTABLE WARNING PANEL

WORK ZONE AREA (CLOSED)

TURNING

AREA

EXISTING SIDEWALK

AREA

6 IN MAX

IN

M

IN

48 IN MIN

OR TEMPORARY PEDESTRIAN FACILITY

HIGH

CONTRAST

COLOR ON ALL

NON-SKID ADA

COMPLIANT

SURFACES

(TYP)

VARIES

12:1

VARIES 48 IN MIN ***

LANDING

AREA

*LANDING

AREA

VARIES. **

SEE NOTE #10

FIGURE 6

DETECTION PLATE ***

HAND-TRAILING EDGE ***

2 IN. GAP MIN.*

IN

. M

IN

8 IN. MIN. HEIGHT

* THERE SHALL BE A 2 INCH GAP BETWEEN THE HAND-TRAILING EDGE AND ITS SUPPORT.

** A MAXIMUM 2 INCH GAP BETWEEN THE BOTTOM OF THE BOTTOM RAIL AND THE

SURFACE MAY BE USED TO PROVIDE DRAINAGE.

*** THE HAND-TRAILING EDGE AND DETECTION PLATE SHALL BE CONTINUOUS

THROUGHOUT THE LENGTH OF THE PATH SUCH THAT A PEDESTRIAN USER WITH A

LONG CANE CAN FOLLOW IT.

CROSS SECTION VIEW

ADA-COMPLIANT

SURFACE

2 IN. GAP

MAX.**

* LANDING AREA USED TO OVERLAP NON-ADA COMPLIANT SURFACES.

** DETECTABLE EDGE REMOVED IF A CONTINUOUS SIDEWALK.

*** 60 IN. IF AN OBSTRUCTION IS AT BACK OF SIDEWALK.

HAND-TRAILING EDGE ***

PROTECTIVE

EDGING

OR DETECTABLE EDGE

CURB

RAMP

Work Zone Safety Standard Details and Drawings

A00815 - 21

STATIONARY OPERATIONS

TWO LANE UNDIVIDED ROADWAY

HALF OF ROADWAY CLOSED

WORK NEAR CURVE

POSTED

SPEED

LIMIT

(MPH)

SPACING FOR

ADVANCE WARNING

SIGNS (FT)

(A,B,C)

CHANNELIZATION DEVICES (DRUMS OR CONES)

TRAVEL

LANE

CLOSURE

LENGTH

(L) (FT)

BUFFER

ZONE

LENGTH

(FT)

DEVICE

SPACING

(FT)

MIN

# OF

DEVICES*

25-40 500 / 500 / 500 50 100 20 30

45-55 500 / 1000 / 1000 100 150 40 20

Work Zone Safety Standard Details and Drawings

NOTES

1. IF POLICE DETAIL/UNIFORMED FLAGGER SUPPORT IS REQUIRED, PROVIDE TWO

UNITS.

2. MA-R2-10a LOCATED AT C/2.

3. ** = EXTEND ENOUGH SO TAPER IS BEFORE CURVE

NOT TO SCALE

CHANNELIZATION DEVICE

WORK ZONE

FLASHING ARROW BOARD

TRUCK MOUNTED ATTENUATOR

RADAR SPEED FEEDBACK BOARD

POLICE DETAIL OR UNIFORMED FLAGGERP/F

TEMPORARY PORTABLE RUMBLE STRIP

LEGEND

TYPE III BARRICADE

PORTABLE CHANGEABLE MESSAGE SIGN

* NUMBER OF DEVICES BASED ON 400 FT WORK ZONE.

A00815 - 22

B

C

A

0'

A

B

C

**(SEE NOTE 3)

500'

W20-1

P/F

C/2

C/2

MA-R2-10e

MA-R2-10e

FIGURE 6

STATIONARY OPERATIONS

TWO LANE UNDIVIDED ROADWAY

HALF OF ROADWAY CLOSED

WORK NEAR CURVE

100'

MAX

100'

P /F

W20-7

OR

MA-R2-10a

Work Zone Safety Standard Details and Drawings

R O

A D

W O

R K

X X

X

ROAD

WORK

XXX

SPEEDING

FINES

DOUBLED

WORK ZONE

S P

E E

D

IN

G

FI

N

E S

D O

U B

LE

D

W O

R K

Z O

N E

ONE LANE

ROAD

XXX

W20-4

POLICE

OFFICER

AHEAD

MA-W20-7b

W20-7

OR

MA-W20-7b

W20-4

MA-R2-10a

W20-1

END ROAD

WORK

DOUBLE

FINES END

END ROAD

WORK

DOUBLE

FINES END

A00815 - 23

HALF OF ROADWAY CLOSED

POSTED

SPEED

LIMIT

(MPH)

SPACING FOR

ADVANCE WARNING

SIGNS (FT)

(A,B,C)

CHANNELIZATION DEVICES (DRUMS OR CONES)

TRAVEL

LANE

CLOSURE

LENGTH

(L) (FT)

BUFFER

ZONE

LENGTH

(FT)

DEVICE

SPACING

(FT)

MIN

# OF

DEVICES*

25-40 500 / 500 / 500 50 100 20 30

45-55 500 / 1000 / 1000 100 150 40 20

POSTED REGULATORY

OR WORK ZONE

SPEED

36-mph to 55-mph

35-mph and under

SEPARATION

BETWEEN

RUMBLE

STRIPS

15-feet

10-feet

Work Zone Safety Standard Details and Drawings

NOTES

1. IF POLICE DETAIL/UNIFORMED FLAGGER SUPPORT IS REQUIRED, PROVIDE TWO

UNITS.

2. MA-R2-10a LOCATED AT C/2.

3. OPTIONAL AT THE ENGINEER'S DISCRETION.

4. SHALL BE DEPLOYED IF RUMBLE STRIPS ARE PRESENT.***

NOT TO SCALE

CHANNELIZATION DEVICE

WORK ZONE

FLASHING ARROW BOARD

TRUCK MOUNTED ATTENUATOR

RADAR SPEED FEEDBACK BOARD

POLICE DETAIL OR UNIFORMED FLAGGERP/F

TEMPORARY PORTABLE RUMBLE STRIP

LEGEND

TYPE III BARRICADE

PORTABLE CHANGEABLE MESSAGE SIGN

* NUMBER OF DEVICES BASED ON 400 FT WORK ZONE.

A00815 - 24

FIGURE 7

TWO LANE UNDIVIDED ROADWAY

HALF OF ROADWAY CLOSED

C

B

A

F

T

F

T

A

B

C C/2

C/2

P/F

P/F

MA-R2-10e

W20-1

MA-R2-10a

100' - 150'

MA-R2-10e

B/2

0' M a x

0' M a x

A/2

A/2

B/2

Work Zone Safety Standard Details and Drawings

END ROAD

WORK

DOUBLE

FINES END

END ROAD

WORK

DOUBLE

FINES END

ROAD

WORK

XXX

SPEEDING

FINES

DOUBLED

WORK ZONE

POLICE

OFFICER

AHEAD

RUMBLE

STRIPS

AHEAD

ONE LANE

ROAD

XXX

W20-4

MA-W28-1

W20-7 OR

MA-W20-7b

ROAD

WORK

XXX

W20-1

SPEEDING

FINES

DOUBLED

WORK ZONE

POLICE

OFFICER

AHEAD

W20-7 OR

MA-W20-7b

RUMBLE

STRIPS

AHEAD

***MA-W28-1

MA-R2-10a

ONE LANE

ROAD

XXX

W20-4

A00815 - 25

SHOULDER CLOSED

POSTED

SPEED

LIMIT

(MPH)

SPACING FOR

ADVANCE WARNING

SIGNS (FT)

(A,B,C)

CHANNELIZATION DEVICES (DRUMS OR CONES)

SHOULDER

TAPER

LENGTH

(L/3) (FT)

BUFFER

ZONE

LENGTH

(FT)

DEVICE

SPACING

(FT)

MIN

# OF

DEVICES*

25-40 500 / 500 / 500 110 305 20 45

45-55 500 / 1000 / 1000 220 495 40 30

60-65 1000 / 1600 / 2600 260 645 40 35

* NUMBER OF DEVICES BASED ON 400 FT WORK ZONE.

Work Zone Safety Standard Details and Drawings

NOTES

1. MA-R2-10a at C/2 and A/2.

NOT TO SCALE

CHANNELIZATION DEVICE

WORK ZONE

FLASHING ARROW BOARD

TRUCK MOUNTED ATTENUATOR

RADAR SPEED FEEDBACK BOARD

POLICE DETAIL OR UNIFORMED FLAGGERP/F

TEMPORARY PORTABLE RUMBLE STRIP

LEGEND

TYPE III BARRICADE

PORTABLE CHANGEABLE MESSAGE SIGN

A00815 - 26

FIGURE 8

TWO LANE UNDIVIDED ROADWAY

SHOULDER CLOSED

A

F

T

F

T A

B

L/3

C C/2

A/2

MA-R2-10a

W21-5

BUFFER

Work Zone Safety Standard Details and Drawings

SHOULDER

WORK

ROAD

NARROWS W5-1

SPEEDING

FINES

DOUBLED

WORK ZONE

ROAD

WORK

XXX

W20-1

END ROAD

WORK

DOUBLE

FINES END

MA-R2-10e

ROAD

WORK

XXX

W20-1

SPEEDING

FINES

DOUBLED

WORK ZONE

MA-R2-10a

END ROAD

WORK

DOUBLE

FINES END

MA-R2-10e

A00815 - 27

WITH TRAVERSABLE SHOULDER

HALF OF ROADWAY CLOSED

MAINTAIN TWO-WAY TRAFFIC

POSTED

SPEED

LIMIT

(MPH)

CHANNELIZATION DEVICES (DRUMS OR CONES)

SHOULDER

TAPER

LENGTH

(L/3) (FT)

TRAVEL

LANE

SHIFT

LENGTH

(L/2) (FT)

BUFFER

ZONE

LENGTH

(FT)

DEVICE

SPACING

(FT)

MIN

# OF

DEVICES*

25-40 110 160 305 20 125

45-55 220 330 495 40 100

60-65 260 390 645 40 115

* NUMBER OF DEVICES BASED ON 400 FT WORK ZONE.

POSTED

SPEED

LIMIT

(MPH)

SPACING FOR

ADVANCE WARNING

SIGNS (FT)

(A,B,C)

25-40 500 / 500 / 500

45-55 500 / 1000 / 1000

60-65 1000 / 1600 / 2600

Work Zone Safety Standard Details and Drawings

NOTES

1. MA-R2-10a LOCATED AT C/2.

NOT TO SCALE

CHANNELIZATION DEVICE

WORK ZONE

FLASHING ARROW BOARD

TRUCK MOUNTED ATTENUATOR

RADAR SPEED FEEDBACK BOARD

POLICE DETAIL OR UNIFORMED FLAGGERP/F

TEMPORARY PORTABLE RUMBLE STRIP

LEGEND

TYPE III BARRICADE

PORTABLE CHANGEABLE MESSAGE SIGN

A00815 - 28

FIGURE 9

TWO LANE UNDIVIDED ROADWAY

WITH TRAVERSABLE SHOULDER

HALF OF ROADWAY CLOSED

MAINTAIN TWO-WAY TRAFFIC

MA-R2-10e5

F

T

F

T

B

A

L/3

L/2

C

B

A

L/2

C C/2

C/2

10' MIN

B U

F F

E R

B U

F F

E R

Work Zone Safety Standard Details and Drawings

END ROAD

WORK

DOUBLE

FINES END

ROAD

WORK

XXX

W1-4L

W20-1

ROAD

NARROWS

W5-1

SPEEDING

FINES

DOUBLED

WORK ZONE

MA-R2-10a

MA-R2-10e

END ROAD

WORK

DOUBLE

FINES END

W1-4R

ROAD

WORK

XXX

ROAD

NARROWS

SPEEDING

FINES

DOUBLED

WORK ZONE

W5-1

MA-R2-10a

W20-1

A00815 - 29

FOUR LANE UNDIVIDED ROADWAY

RIGHT LANE CLOSED

POSTED

SPEED

LIMIT

(MPH)

CHANNELATION DEVICES (DRUMS OR CONES)

SHOULDER

TAPER

LENGTH

(L/3) (FT)

TRAVEL

LANE

CLOSURE

LENGTH

(L) (FT)

BUFFER

ZONE

LENGTH

(FT)

DEVICE

SPACING

(FT)

MIN

# OF

DEVICES*

25-40 110 320 305 20 60

45-55 220 660 495 40 50

60-65 260 780 645 40 55

* NUMBER OF DEVICES BASED ON 400 FT WORK ZONE.

Work Zone Safety Standard Details and Drawings

POSTED

SPEED

LIMIT

(MPH)

SPACING FOR

ADVANCE WARNING

SIGNS (FT)

(A,B,C)

25-40 500 / 500 / 500

45-55 500 / 1000 / 1000

60-65 1000 / 1600 / 2600

NOTES

1. MA-R2-10a LOCATED AT A/2 AND C/2.

2. OPTIONAL AT THE ENGINEER'S DISCRETION.**

NOT TO SCALE

CHANNELIZATION DEVICE

WORK ZONE

FLASHING ARROW BOARD

TRUCK MOUNTED ATTENUATOR

RADAR SPEED FEEDBACK BOARD

POLICE DETAIL OR UNIFORMED FLAGGERP/F

TEMPORARY PORTABLE RUMBLE STRIP

LEGEND

TYPE III BARRICADE

PORTABLE CHANGEABLE MESSAGE SIGN

A00815 - 30

FIGURE 10

FOUR LANE UNDIVIDED ROADWAY

RIGHT LANE CLOSED

C

B

A

L

A

F

T

F

T

Buffer

C/2

A/2

L/3

F

T

MA-R2-10e

W20-1

AT BEGINNING

OF TAPER

Work Zone Safety Standard Details and Drawings

END ROAD

WORK

DOUBLE

FINES END

WORK ZONE

SPEED

LIMIT

YOUR SPEED

ROAD

WORK

XXX

SPEEDING

FINES

DOUBLED

WORK ZONE

MA-R2-10e

END ROAD

WORK

DOUBLE

FINES END

MA-R2-10e

W4-2R

RIGHT

LANE

CLOSED

XXX

W20-5R

SPEEDING

FINES

DOUBLED

WORK ZONE

MA-R2-10a

ROAD

WORK

XXX

W20-1

A00815 - 31

LEFT LANE CLOSED

POSTED

SPEED

LIMIT

(MPH)

SPACING FOR

ADVANCE WARNING

SIGNS (FT)

(A,B,C)

CHANNELIZATION DEVICES (DRUMS OR CONES)

TRAVEL

LANE

CLOSURE

LENGTH

(L) (FT)

BUFFER

ZONE

LENGTH

(FT)

DEVICE

SPACING

(FT)

MIN

# OF

DEVICES*

25-40 500 / 500 / 500 320 305 20 105

45-55 500 / 1000 / 1000 660 495 40 80

60-65 1000 / 1600 / 2600 780 645 40 100

* NUMBER OF DEVICES BASED ON 400 FT WORK ZONE.

Work Zone Safety Standard Details and Drawings

NOTES

1. MA-R2-10a LOCATED AT A/2 AND C/2.

2. OPTIONAL AT THE ENGINEER'S DISCRETION. 2' OFFSET FROM EDGE OF

TRAVEL LANE TO RADAR SPEED FEEDBACK BOARD IS REQUIRED. BOARD MAY

BE MOVED FULLY OR PARTIALLY OFF PAVED SHOULDER, IF REQUIRED.

NOT TO SCALE

CHANNELIZATION DEVICE

WORK ZONE

FLASHING ARROW BOARD

TRUCK MOUNTED ATTENUATOR

RADAR SPEED FEEDBACK BOARD

POLICE DETAIL OR UNIFORMED FLAGGERP/F

TEMPORARY PORTABLE RUMBLE STRIP

LEGEND

TYPE III BARRICADE

PORTABLE CHANGEABLE MESSAGE SIGN

A00815 - 32

FIGURE 11

FOUR LANE UNDIVIDED ROADWAY

LEFT LANE CLOSED

BUFFER

C

B

A

L

F

T

F

T

C/2

A

A/2

AT BEGINNING

OF TAPER

Work Zone Safety Standard Details and Drawings

ROAD

WORK

XXX

W20-1

SPEEDING

FINES

DOUBLED

WORK ZONE

MA-R2-10a

END ROAD

WORK

DOUBLE

FINES END

MA-R2-10e

END ROAD

WORK

DOUBLE

FINES END

MA-R2-10e

ROAD

WORK

XXX

W20-1

SPEEDING

FINES

DOUBLED

WORK ZONE

MA-R2-10a

LEFT

LANE

CLOSED

XXX

W20-5L

W4-2L

WORK ZONE

SPEED

LIMIT

YOUR SPEED

F

T

A00815 - 33

HALF OF ROADWAY CLOSED

POSTED

SPEED

LIMIT

(MPH)

CHANNELIZATION DEVICES (DRUMS OR CONES)

SHOULDER

TAPER

LENGTH

(L/3) (FT)

TRAVEL

LANE

CLOSURE

LENGTH

(L) (FT)

TRAVEL

LANE

SHIFT

LENGTH

(L/2) (FT)

BUFFER

ZONE

LENGTH

(FT)

DEVICE

SPACING

(FT)

MIN

# OF

DEVICES*

25-40 110 320 160 305 20 140

45-55 220 660 330 495 40 120

60-65 260 780 390 645 40 140

* NUMBER OF DEVICES BASED ON 400 FT WORK ZONE.

POSTED

SPEED

LIMIT

(MPH)

SPACING FOR

ADVANCE WARNING

SIGNS (FT)

(A,B,C)

25-40 500 / 500 / 500

45-55 500 / 1000 / 1000

60-65 1000 / 1600 / 2600

Work Zone Safety Standard Details and Drawings

NOTES

1. MA-R2-10a LOCATED AT C/2.

2. OPTIONAL AT THE ENGINEER'S DISCRETION.

3. W1-4L SHALL BE PLACED AT THE MIDDLE OF THE TANGENT.**

NOT TO SCALE

CHANNELIZATION DEVICE

WORK ZONE

FLASHING ARROW BOARD

TRUCK MOUNTED ATTENUATOR

RADAR SPEED FEEDBACK BOARD

POLICE DETAIL OR UNIFORMED FLAGGERP/F

TEMPORARY PORTABLE RUMBLE STRIP

LEGEND

TYPE III BARRICADE

PORTABLE CHANGEABLE MESSAGE SIGN

A00815 - 34

FIGURE 12

FOUR LANE UNDIVIDED ROADWAY

HALF OF ROADWAY CLOSED

BUFFER

F

T

L/2

L

A

B

C

F

T

C

B

A

L

L/2

L/2

C/2

C/2

L/3

AT BEGINNING

OF TAPER

W1-4L

(SEE NOTE 3)

AT BEGINNING

OF TAPER

Work Zone Safety Standard Details and Drawings

END ROAD

WORK

DOUBLE

FINES END

MA-R2-10e

END ROAD

WORK

DOUBLE

FINES END

MA-R2-10e

W4-2L

LEFT

LANE

CLOSED

XXX

W20-5L

ROAD

WORK

XXX

W20-1

SPEEDING

FINES

DOUBLED

WORK ZONE

MA-R2-10a

W4-2R

RIGHT

LANE

CLOSED

XXX

W20-5R

SPEEDING

FINES

DOUBLED

WORK ZONE

MA-R2-10a

ROAD

WORK

XXX

W20-1

WORK ZONE

SPEED

LIMIT

YOUR SPEED

F

T

A00815 - 35

MULTILANE DIVIDED ROADWAY

RIGHT LANE CLOSED

POSTED

SPEED

LIMIT

(MPH)

CHANNELIZATION DEVICES (DRUMS OR CONES)

SHOULDER

TAPER

LENGTH

(L/3) (FT)

TRAVEL

LANE

CLOSURE

LENGTH

(L) (FT)

BUFFER

ZONE

LENGTH

(FT)

DEVICE

SPACING

(FT)

MIN

# OF

DEVICES*

25-40 110 320 305 20 60

45-55 220 660 495 40 50

60-65 260 780 645 40 55

* NUMBER OF DEVICES BASED ON 400 FT WORK ZONE.

POSTED

SPEED

LIMIT

(MPH)

SPACING FOR

ADVANCE WARNING

SIGNS (FT)

(A,B,C)

25-40 500 / 500 / 500

45-55 500 / 1000 / 1000

60-65 1000 / 1600 / 2600

Work Zone Safety Standard Details and Drawings

NOTES

1. MA-R2-10a LOCATED AT C/2.

2. OPTIONAL AT THE ENGINEER'S DISCRETION.**

NOT TO SCALE

CHANNELIZATION DEVICE

WORK ZONE

FLASHING ARROW BOARD

TRUCK MOUNTED ATTENUATOR

RADAR SPEED FEEDBACK BOARD

POLICE DETAIL OR UNIFORMED FLAGGERP/F

TEMPORARY PORTABLE RUMBLE STRIP

LEGEND

TYPE III BARRICADE

PORTABLE CHANGEABLE MESSAGE SIGN

A00815 - 36

FIGURE 13

MULTILANE DIVIDED ROADWAY

RIGHT LANE CLOSED

C

B

A

L

BUFFER

F

T

C/2

L/3

F

T

AT BEGINNING

OF TAPER

Work Zone Safety Standard Details and Drawings

END ROAD

WORK

DOUBLE

FINES END

MA-R2-10e

WORK ZONE

SPEED

LIMIT

YOUR SPEED

W4-2R

RIGHT

LANE

CLOSED

XXX

W20-5R

SPEEDING

FINES

DOUBLED

WORK ZONE

MA-R2-10a

ROAD

WORK

XXX

W20-1

A00815 - 37

LEFT LANE CLOSED

Work Zone Safety Standard Details and Drawings

POSTED

SPEED

LIMIT

(MPH)

CHANNELIZATION DEVICES (DRUMS OR CONES)

SHOULDER

TAPER

LENGTH

(L/3) (FT)

TRAVEL

LANE

CLOSURE

LENGTH

(L) (FT)

BUFFER

ZONE

LENGTH

(FT)

DEVICE

SPACING

(FT)

MIN

# OF

DEVICES*

25-40 110 320 305 20 60

45-55 220 660 495 40 50

60-65 260 780 645 40 55

* NUMBER OF DEVICES BASED ON 400 FT WORK ZONE.

POSTED

SPEED

LIMIT

(MPH)

SPACING FOR

ADVANCE WARNING

SIGNS (FT)

(A,B,C)

25-40 500 / 500 / 500

45-55 500 / 1000 / 1000

60-65 1000 / 1600 / 2600

NOTES

1. MA-R2-10a LOCATED AT C/2.

2. OPTIONAL AT THE ENGINEER'S DISCRETION.**

NOT TO SCALE

CHANNELIZATION DEVICE

WORK ZONE

FLASHING ARROW BOARD

TRUCK MOUNTED ATTENUATOR

RADAR SPEED FEEDBACK BOARD

POLICE DETAIL OR UNIFORMED FLAGGERP/F

TEMPORARY PORTABLE RUMBLE STRIP

LEGEND

TYPE III BARRICADE

PORTABLE CHANGEABLE MESSAGE SIGN

A00815 - 38

FIGURE 14

MULTILANE DIVIDED ROADWAY

LEFT LANE CLOSED

BUFFER

AT BEGINNING

OF TAPER

F

T

C

B

A

L

C/2

L/3

Work Zone Safety Standard Details and Drawings

END ROAD

WORK

DOUBLE

FINES END

MA-R2-10e

W4-2L

LEFT

LANE

CLOSED

XXX

W20-5L

SPEEDING

FINES

DOUBLED

WORK ZONE

MA-R2-10e

ROAD

WORK

XXX

W20-1

F T

WORK ZONE

SPEED

LIMIT

YOUR SPEED

A00815 - 39

CENTER LANE OR RIGHT/CENTER

LANES CLOSED

POSTED

SPEED

LIMIT

(MPH)

CHANNELIZATION DEVICES (DRUMS OR CONES)

SHOULDER

TAPER

LENGTH

(L/3) (FT)

TRAVEL

LANE

CLOSURE

LENGTH

(L) (FT)

TANGENT

LENGTH

BETWEEN

TAPERS

T (FT)

BUFFER

ZONE

LENGTH

(FT)

DEVICE

SPACING

(FT)

MIN

# OF

DEVICES*

25-40 110 320 640 305 20 110

45-55 220 660 1320 495 40 100

60-65 260 780 1560 645 40 115

* NUMBER OF DEVICES BASED ON 400 FT WORK ZONE.

Work Zone Safety Standard Details and Drawings

POSTED

SPEED

LIMIT

(MPH)

SPACING FOR

ADVANCE WARNING

SIGNS (FT)

(A,B,C)

25-40 500 / 500 / 500

45-55 500 / 1000 / 1000

60-65 1000 / 1600 / 2600

NOTES

1. MA-R2-10a LOCATED AT C/2.

2. OPTIONAL AT THE ENGINEER'S DISCRETION.

3. THIS SET OF SIGNS SHALL BE LOCATED AT T/2.*****

NOT TO SCALE

CHANNELIZATION DEVICE

WORK ZONE

FLASHING ARROW BOARD

TRUCK MOUNTED ATTENUATOR

RADAR SPEED FEEDBACK BOARD

POLICE DETAIL OR UNIFORMED FLAGGERP/F

TEMPORARY PORTABLE RUMBLE STRIP

LEGEND

TYPE III BARRICADE

PORTABLE CHANGEABLE MESSAGE SIGN

A00815 - 40

FIGURE 15

MULTILANE DIVIDED ROADWAY

CENTER LANE OR RIGHT/CENTER

LANES CLOSED

C

B

A

L

T

F

T

C/2

L/3

AT BEGINNING

OF TAPER

BUFFER

L

Work Zone Safety Standard Details and Drawings

END ROAD

WORK

DOUBLE

FINES END

MA-R2-10e

W4-2R

W4-2R

ROAD

WORK

XXX

W20-1

RIGHT

TWO LANES

CLOSED

XXX

MA-W20-5bR

SPEEDING

FINES

DOUBLED

WORK ZONE

MA-R2-10a

WORK ZONE

SPEED

LIMIT

YOUR SPEED

F

T

A00815 - 41

CENTER LANE OR LEFT/CENTER LANES

CLOSED

Work Zone Safety…