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AND REQUIREMENTS

GENERAL NOTES

BARRICADE AND CONSTRUCTION

4-03

9-07

5-10

7-13

BC(1)-21

8-14 bc-21.dgn

Standard Division Safety Traffic

BARRICADE AND CONSTRUCTION (BC) STANDARD SHEETS GENERAL NOTES:

http://www.txdot.gov

THE DOCUMENTS BELOW CAN BE FOUND ON-LINE AT

COMPLIANT WORK ZONE TRAFFIC CONTROL DEVICES LIST (CWZTCD)

TEXAS MANUAL ON UNIFORM TRAFFIC CONTROL DEVICES (TMUTCD)

STANDARD HIGHWAY SIGN DESIGNS FOR TEXAS (SHSD)

TRAFFIC ENGINEERING STANDARD SHEETS

MATERIAL PRODUCER LIST (MPL)

ROADWAY DESIGN MANUAL - SEE "MANUALS (ONLINE MANUALS)"

DEPARTMENTAL MATERIAL SPECIFICATIONS (DMS)

or as approved by the Engineer.

right-of-way line as possible, or located behind a barrier or guardrail, must be parked away from travel lanes. They should be as close to the

13. Inactive equipment and work vehicles, including workers' private vehicles devices.

12. The Engineer has the final decision on the location of all traffic control progress or a definite need exists.

11. Traffic control devices should be in place only while work is actually in limits. For mobile operations, CSJ limit signs are not required.

CONTRACTOR and END ROAD WORK signs shall be erected at or near the CSJ erected in advance of the CSJ limits. The BEGIN ROAD WORK NEXT X MILES, LATER and the WORK ZONE TRAFFIC FINES DOUBLE sign with plaque shall be on BC(2). The OBEY WARNING SIGNS STATE LAW sign, STAY ALERT TALK OR TEXT

Control Devices, CSJ limit signs are required. CSJ limit signs are shown than mobile operations as defined by the Texas Manual on Uniform Traffic

10. Where highway construction or maintenance work is being undertaken, other appropriate traffic control devices to be used.

BC sheets are examples. As necessary, the Engineer will determine the most

9. The temporary traffic control devices shown in the illustrations of the provide a detail to the Contractor before the sign is manufactured.

not shown in this manual shall be shown in the plans or the Engineer shall

"Standard Highway Sign Designs for Texas," latest edition. Sign details

8. All signs shall be constructed in accordance with the details found in the justify the signing.

divided highways where median width will permit and traffic volumes

7. The Engineer may require duplicate warning signs on the median side of revised to show appropriate work zone distance.

directed by the Engineer. The BEGIN ROAD WORK NEXT X MILES sign shall be necessary warning signs as shown on these sheets, the TCP sheets or as adjacent project is completed first, the Contractor shall erect the redundant and the work areas appear continuous to the motorists. If the

FINES DOUBLE, and other advance warning signs if the signing would be

6. When projects abut, the Engineer(s) may omit the END ROAD WORK, TRAFFIC

Design Manual" or engineering judgment.

"A Policy on Geometric Design of Highways and Streets," the TxDOT "Roadway

Association of State Highway and Transportation Officials (AASHTO), applicable design criteria contained in manuals such as the American

5. Geometric design of lane shifts and detours should, when possible, meet the the approximate location of any device without the approval of the Engineer.

control devices as shown in the plans. The Contractor may not move or change

4. The Contractor is responsible for installing and maintaining the traffic sign and seal Contractor proposed changes.

by a licensed professional engineer for approval. The Engineer may develop,

3. The Contractor may propose changes to the TCP that are signed and sealed responsibility of the Engineer.

2. The development and design of the Traffic Control Plan (TCP)is the shown in the "Texas Manual on Uniform Traffic Control Devices" (TMUTCD).

The information contained in these sheets meet or exceed the requirements devices, construction pavement markings, and typical work zone signs.

to show typical examples for placement of temporary traffic control

1. The Barricade and Construction Standard Sheets (BC sheets) are intended

5-21

COMPLIANT WORKZONE TRAFFIC CONTROL DEVICES

Assessing safety Hardware (MASH).

2. Work zone traffic control devices shall be compliant with the Manual for and their sources.

Traffic Control Devices List" (CWZTCD) describes pre-qualified products

1. Only pre-qualified products shall be used. The "Compliant Work Zone when flagging is used at night.

2. Except in emergency situations, flagger stations shall be illuminated considered for high traffic volume work areas or night time work.

performance for Class 2 or 3 risk exposure. Class 3 garments should be

Apparel," or equivalent revisions, and labeled as ANSI 107-2004 standard the requirements of ISEA "American National Standard for High-Visibility within the right-of-way shall wear high-visibility safety apparel meeting

1. Workers on foot who are exposed to traffic or to construction equipment

WORKER SAFETY NOTES:

f t h i s s t a n d a r d t o o t h e r f o r m a t s o r f o r i n c o r r e c t r e s u l t s o r d a m a g e s r e s u l t i n g f r o m i t s u s e k i n d d e

D O

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D O

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T e x g i n e e r i a c t i t r r a n t y o f a n y

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November 2002

SHEET 4 OF 12

9-07

7-13

TEMPORARY SIGN NOTES

BARRICADE AND CONSTRUCTION

XX

T r a v e l l a n e e d

12' min.

FRONT ELEVATION

SIDE ELEVATION

T r a v e l l a n e e d

OR

TYPICAL MINIMUM CLEARANCES FOR LONG TERM AND INTERMEDIATE TERM SIGNS

CONTRACTOR REQUIREMENTS FOR MAINTAINING PERMANENT SIGNS

WITHIN THE PROJECT LIMITS

0'-6'

3. When existing permanent signs are moved and relocated due to construction

Standards. This work should be paid for under the appropriate pay item for or his/her construction equipment shall be replaced as soon as possible by the to Item 502.

ATTACHMENT FOR SIGN SUPPORTS

Wood

STOP/SLOW PADDLES

24"

24"

6.0' min.

Fiber Reinforced Plastic

Wood, metal or

SIZE OF SIGNS

SIGN SUBSTRATES

SIGN LETTERS

min.

6'

9.0' max.

7.0' min.

9.0' max.

7.0' min.

shoulder

Paved shoulder

Paved above sign protrude shall not

Support above sign protrude shall not

Support substrate.

back of the sign

1/2 way up the extend more than

Sign supports shall

Supplemental plaques (advisory or distance) should not cover the surface of the parent sign.

When plaques are placed on dual-leg supports, they should be attached to the upright nearest the travel lane.

Objects shall NOT be placed under skids as a means of leveling.

When placing skid supports on unlevel ground, the leg post lengths must be adjusted so the sign appears straight and plumb.

MPH

be allowed.

other means.

by splicing or extended or repaired supports shall not be any means. Wood joined or spliced by signs shall not be support. Multiple directly to the sign shall be attached

Each sign

Nails shall NOT sign supports substrates to other types of procedures for attaching sign manufacturer's recommended or screws. Use TxDOT's or will be by bolts and nuts

Attachment to wooden supports

FLAGS ON SIGNS

greater

6' or of at least the same gauge material.

should be at least 5 times nominal post size, centered on the splice and the sign substrate, not near the base of the support. Splice insert lengths above and two below the spice point. Splice must be located entirely behind height will only be allowed when the splice is made using four bolts, two

Splicing embedded perforated square metal tubing in order to extend post

GENERAL NOTES FOR WORK ZONE SIGNS

DURATION OF WORK (as defined by the "Texas Manual on Uniform Traffic Control Devices" Part 6)

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

more than one hour.

c. Short-term stationary - daytime work that occupies a location for more than 1 hour in a single daylight period.

e. Mobile - work that moves continuously or intermittently (stopping for up to approximately 15 minutes.)

SIGN MOUNTING HEIGHT

1. The bottom of Long-term/Intermediate-term signs shall be at least 7 feet, but not more than 9 feet, above the paved surface, except as shown for supplemental plaques mounted below other signs.

3. Long-term/Intermediate-term Signs may be used in lieu of Short-term/Short Duration signing.

appropriate Long-term/Intermediate sign height.

5. Regulatory signs shall be mounted at least 7 feet, but not more than 9 feet, above the paved surface regardless of work duration.

REFLECTIVE SHEETING

1. All signs shall be retroreflective and constructed of sheeting meeting the color and retro-reflectivity requirements of DMS-8300 for rigid signs or DMS-8310 for roll-up signs. The web address for DMS specifications is shown on BC(1).

REMOVING OR COVERING

1. When sign messages may be confusing or do not apply, the signs shall be removed or completely covered.

2. Long-term stationary or intermediate stationary signs installed on square metal tubing may be turned away from traffic 90 degrees when

3. Signs installed on wooden skids shall not be turned at 90 degree angles to the roadway. These signs should be removed or completely covered when not required.

4. When signs are covered, the material used shall be opaque, such as heavy mil black plastic, or other materials which will cover the

1. The Contractor shall furnish the sign sizes shown on BC (2) unless otherwise shown in the plans or as directed by the Engineer.

intersections where the sign may be seen from approaching traffic.

the sign message is not applicable. This technique may not be used for signs installed in the median of divided highways or near any

1. The Contractor shall ensure the sign substrate is installed in accordance with the manufacturer's recommendations for the type of sign support that is being used. The CWZTCD lists each substrate that can be used on the different types and models of sign supports.

2. "Mesh" type materials are NOT an approved sign substrate, regardless of the tightness of the weave.

3. All wooden individual sign panels fabricated from 2 or more pieces shall have one or more plywood cleat, 1/2" thick by 6" wide, fastened to the back of the sign and extending fully across the sign. The cleat shall be attached to the back of the sign using wood screws that do not penetrate the face of the sign panel. The screws shall be placed on both sides of the splice and spaced at 6" centers. The Engineer may approve other methods of splicing the sign face.

2. White sheeting, meeting the requirements of DMS-8300 Type A, shall be used for signs with a white background.

4. Short-term/Short Duration signs shall be used only during daylight and shall be removed at the end of the workday or raised to

5. Burlap shall NOT be used to cover signs.

6. Duct tape or other adhesive material shall NOT be affixed to a sign face.

entire sign face and maintain their opaque properties under automobile headlights at night, without damaging the sign sheeting.

7. Signs and anchor stubs shall be removed and holes backfilled upon completion of work.

BC(4)-21

Safety Traffic

24"

24"

USAGE COLOR SIGN FACE MATERIAL

LEGEND & BORDER

WHITELEGEND & BORDER

BACKGROUND

ACRYLIC NON-REFLECTIVE FILMBLACK

BACKGROUND TYPE B OR C SHEETING

SHEETING REQUIREMENTS (WHEN USED AT NIGHT)

RED

ORANGE FL FL

TYPE B OR C SHEETING

installed on crashworthy bases as shown on the SMD Standard sheets. The signs should be paid for under the appropriate pay item for relocating existing signs.

heights shown on the BC, or the SMD standard sheets during construction. This work

TLRS standard sheets or the CWZTCD list. The signs shall meet the required mounting the Contractor shall use crashworthy supports as shown on the BC standard sheets,

5. If permanent signs are to be removed and relocated using temporary supports, purposes, they shall be visible to motorists at all times.

4. If existing signs are to be relocated on their original supports, they shall be shall meet the required mounting heights shown on the BC Sheets or the SMD relocating existing signs.

Contractor to ensure proper guidance for the motorists. This will be subsidiary

6. Any sign or traffic control device that is struck or damaged by the Contractor color. Flags shall not be allowed to cover any portion of the sign face.

be 16 inches square or larger and shall be orange or fluorescent red-orange in

1. Flags may be used to draw attention to warning signs. When used, the flag shall

C u r b curb from minimum

2 '

9.0' max.

7.0' min.

sign supports placed on slopes.

8. Sandbags shall NOT be placed under the skid and shall not be used to level along the length of the skids to weigh down the sign support.

hung with rope, wire, chains or other fasteners. Sandbags shall be placed traffic control device and shall not be suspended above ground level or

7. Sandbags shall only be placed along or laid over the base supports of the with rubber bases may be used when shown on the CWZTCD list.

ballast on portable sign supports. Sign supports designed and manufactured

6. Rubber ballasts designed for channelizing devices should not be used for impact. Rubber (such as tire inner tubes) shall NOT be used.

5. Sandbags shall be made of a durable material that tears upon vehicular

4. Sandbags should weigh a minimum of 35 lbs and a maximum of 50 lbs.

for use as sign support weights.

3. Rock, concrete, iron, steel or other solid objects shall not be permitted constant weight.

2. The sandbags will be tied shut to keep the sand from spilling and to maintain a of sandbags with dry, cohesionless sand should be used.

1. Where sign supports require the use of weights to keep from turning over, the use

SIGN SUPPORT WEIGHTS

d. Short, duration - work that occupies a location up to 1 hour.

9. The Contractor shall replace damaged wood posts. New or damaged wood sign posts shall not be spliced.

for identification shall be 1 inch.

8. Identification markings may be shown only on the back of the sign substrate. The maximum height of letters and/or company logos used damaged or marred reflective sheeting as directed by the Engineer/Inspector.

7. The Contractor is responsible for installing signs on approved supports and replacing signs with damaged or cracked substrates and/or the Engineer can verify the correct procedures are being followed.

regarding installation procedures, the Contractor shall furnish the Engineer a copy of the manufacturer's installation recommendations so standard sheets.The Contractor shall install the sign support in accordance with the manufacturer's recommendations. If there is a question signs. Supports for temporary large roadside signs shall meet the requirements detailed on the Temporary Large Roadside Signs (TLRS)

6. The Contractor shall furnish sign supports listed in the "Compliant Work Zone Traffic Control Device List" (CWZTCD) for small roadside the Inspector's TxDOT diary and having both the Inspector and Contractor initial and date the agreed upon changes.

Responsible Person. All changes must be documented in writing before being implemented. This can include documenting the changes in from the plans. Any variation in the plans shall be documented by written agreement between the Engineer and the Contractor's

Engineer/Inspector may require the Contractor to furnish other work zone signs that are shown in the TMUTCD but may have been omitted

5. The Contractor may furnish either the sign design shown in the plans or in the "Standard Highway Sign Designs for Texas" (SHSD). The guide the traveling public safely through the work zone.

4. All signs shall be installed in accordance with the plans or as directed by the Engineer. Signs shall be used to regulate, warn, and

3. Barricades shall NOT be used as sign supports.

2. Wooden sign posts shall be painted white.

1. Contractor shall install and maintain signs in a straight and plumb condition and/or as directed by the Engineer.

regard to crashworthiness and duration of work requirements.

Contractor is responsible for ensuring the sign support, sign mounting height and substrate meets manufacturer's recommendations in work being performed. The Engineer is responsible for selecting the appropriate size sign for the type of work being performed. The

1. The types of sign supports, sign mounting height,the size of signs, and the type of sign substrates can vary based on the type of first class workmanship in accordance with Department Standards and Specifications.

Administration (FHWA) and as published in the "Standard Highway Sign Design for Texas" manual. Signs, letters and numbers shall be of

1. All sign letters and numbers shall be clear, and open rounded type uppercase alphabet letters as approved by the Federal Highway the ground.

2. The bottom of Short-term/Short Duration signs shall be a minimum of 1 foot above the pavement surface but no more than 2 feet above

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

FL FL

3. Orange sheeting, meeting the requirements of DMS-8300 Type B or Type C , shall be used for rigid signs with orange backgrounds.

TYPE B OR C SHEETING

Hand Signaling Devices in the TMUTCD.

shall only be as specifically described in Section 6E.03

4. Any lights incorporated into the STOP or SLOW paddle faces length of 6' to the bottom of the sign.

3. STOP/SLOW paddles may be attached to a staff with a minimum

2. STOP/SLOW paddles shall be retroreflectorized when used at night.

by flaggers. The STOP/SLOW paddle size should be 24" x 24".

1. STOP/SLOW paddles are the primary method to control traffic construction.

if not better route guidance as normally installed on a roadway without cultural information. Drivers proceeding through a work zone need the same, of interest, and other geographical, recreational, specific service (LOGO), or show route designations, destinations, directions, distances, services, points attention to conditions that are potentially hazardous to traffic operations,

1. Permanent signs are used to give notice of traffic laws or regulations, call

Legend & Border - White

Background - Red

Legend & Border - Black

Background - Orange

TS-CD standard.

the roadway condition. For details for covering large guide signs see the remove or cover the permanent signs until the permanent sign message matches

2. When permanent regulatory or warning signs conflict with work zone conditions, 5-21

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30"

40"

27"

36"

24"

2x6

2x4 x 40"

72"

2x6

Front Side

Top that can be used for each approved sign support.

See the CWZTCD for the type of sign substrate

NOT be allowed. Posts shall be painted white.

Wood sign posts MUST be one piece. Splicing will

See BC(4) for definition of "Work Duration."

post wood

4x4 sign face

21 sq. ft. of

Maximum block

4x4 requirement height for sign

See BC(4)

This will be considered subsidiary to Item 502.

foundations shall be removed from the project site.

3. When project is completed, all sign supports and

CWZTCD List.

7 ft. circle, except for specific materials noted on the

2. No more than 2 sign posts shall be placed within a connection.

lag screws must be used on every joint for final supports, but 3/8" bolts with nuts or 3/8" x 3 1/2"

1. Nails may be used in the assembly of wooden sign

GENERAL NOTES

Front post wood

4x4 requirement height for sign

See BC(4) sign face

12 sq. ft. of

Maximum 24"

60"

2x6

2x6

Top block

4x4 skid

2x6 additional stability.

be increased for

Length of skids may

24" 2x4 brace

4x4 block4x4 block

Side screws

(min.) lag or 3/8" x 3 1/2"

3/8" bolts w/nuts

LONG/INTERMEDIATE TERM STATIONARY - PORTABLE SKID MOUNTED SIGN SUPPORTS

SKID MOUNTED WOOD SIGN SUPPORTS

PERFORATED SQUARE METAL TUBING

GROUND MOUNTED SIGN SUPPORTS

Two post installations can be used for larger signs.

The maximum sign square footage shall adhere to the manufacturer's recommendation.

Refer to the CWZTCD and the manufacturer's installation procedure for each type sign support.

4" max.

Gr ou nd s ur fa ce

WING CHANNEL

Post

Sign

Post

Base for embedment.

See the CWZTCD

48"

5' square tubing or 1 3/4" x 1 3/4" with 5/16" holes

1 3/4" galv. round

(DO NOT SPLICE)

12 ga post

1 3/4" x 1 3/4" x 11 foot

CWZTCD LIST. SEE BC(1) FOR WEBSITE LOCATION.

AND SHORT TERM SUPPORTS CAN BE FOUND ON THE

MORE DETAILS OF APPROVED LONG/INTERMEDIATE

WEDGE ANCHORS

"5 BOLT (TYP.)

3/8" X 4-1/2 gr.

3" telescopes into sleeve

(hole to hole) 12 ga. support

1 3/4 " x 1 3/4 " x 129" tubing diagonal brace to hole) 12 ga. square perforated

1 3/4 " x 1 3/4 " x 52" (hole tubing cross brace to hole) 12 ga. square perforated

1 3/4 " x 1 3/4 " x 32" (hole above pavement provide 7' height telescope to

Upright must

Gr ou nd s ur fa ce

Post

Sign

(Direct Embedment)

OPTION 1

max.

4"

Gr ou nd s ur fa ce

Post

Sign weak soils.

55" min. in strong soils, 34" min. in

(Anchor Stub)

OPTION 2

post) than sign

(1/4" larger

Anchor Stub desirable

9" max.

4"

Gr ou nd s ur fa ce

Post

Sign post) x 18" than sign

(1/2" larger sleeve reinforcing

Optional

18" weak soils.

55" min. in strong soils, 34" min. in

(Anchor Stub and Reinforcing Sleeve))

OPTION 3

post) than sign

(1/4" larger

Anchor Stub desirable

9" bolted anchor Lap-splice/base minimum

48" sign only thinwall plastic

10mm extruded

9 sq. ft. or less-

1/2" plywood is allowed.

the CWZTCD, except 5/8" plywood.

substrate listed in section J.2.d of

16 sq. ft. or less of any rigid sign

OTHER DESIGNS

"Traffic Engineering Standard Sheets" on BC(1)).

if approved by the Engineer. (See web address for face. They may be set in concrete or in sturdy soils sign supports for signs up to 10 square feet of sign on the SMD Standard Sheets may be used as temporary

Both steel and plastic Wedge Anchor Systems as shown

4" sign panel and supports

(2 per support) joining

3/8" x 3" gr. 5 bolt

FILE:

REVISIONS

C TxDOT

November 2002

9-07

36" match sideslope needed to pin at angle weld starts here weldhere starts weld back fill puddle.

weld, do not directions. Minimum going in opposite opposite sides

Welds to start on

48"

2"

Side View upright

12 ga.

2" x 2" x

2.5'

SKID MOUNTED PERFORATED SQUARE STEEL TUBING SIGN SUPPORTS

7/16"

32'

SINGLE LEG BASE

5' weld TYPICAL SIGN SUPPORT

BARRICADE AND CONSTRUCTION

SHEET 5 OF 12

BC(5)-21

Safety Traffic

5 bolt

3/8 " X 3" gr.

60"

3" around tubing

Completely welded welded to skid tubing sleeve perforated

12 ga. square

(hole to hole)

2" x 2" x 8" tubing upright perforated

12 ga. square

(hole to hole)

1 3/4 " x 1 3/4 " x 129" tubing skid

12 ga. perforated

(hole to hole)

2" x 2" x 59"

* LONG/INTERMEDIATE TERM STATIONARY - PORTABLE SKID MOUNTED SIGN SUPPORTS 5-21

post wood

4x4

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MESSAGE SIGN (PCMS)

PORTABLE CHANGEABLE

BARRICADE AND CONSTRUCTION

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PCMS SIGNS WITHIN THE R.O.W. SHALL BE BEHIND GUARDRAIL OR

CONCRETE BARRIER OR SHALL HAVE A MINIMUM OF FOUR (4)

PLASTIC DRUMS PLACED PERPENDICULAR TO TRAFFIC ON THE

LANES SHIFT in Phase 1 must be used with STAY IN LANE in Phase 2.

Roadway designation # IH-number, US-number, SH-number, FM-number

1. When Full Matrix PCMS signs are used, the character height and legibility/visibility requirements shall be maintained as listed in Note 15 under "PORTABLE

CHANGEABLE MESSAGE SIGNS" above.

shall maintain the legibility/visibility requirement listed above.

for, or replace that sign.

4. A full matrix PCMS may be used to simulate a flashing arrow board provided it meets the visibility, flash rate and dimming requirements on BC(7), for the same size arrow.

FULL MATRIX PCMS SIGNS

Access Road ACCS RD Major MAJ

Construction

WORDING ALTERNATIVES

1. The words RIGHT, LEFT and ALL can be interchanged as appropriate.

2. Roadway designations IH, US, SH, FM and LP can be interchanged as appropriate.

3. EAST, WEST, NORTH and SOUTH (or abbreviations E, W, N and S) can be interchanged as appropriate.

4. Highway names and numbers replaced as appropriate.

5. ROAD, HIGHWAY and FREEWAY can be interchanged as needed.

6. AHEAD may be used instead of distances if necessary.

7. FT and MI, MILE and MILES interchanged as appropriate.

8. AT, BEFORE and PAST interchanged as needed.

9. Distances or AHEAD can be eliminated from the message if a location phase is used.

APPLICATION GUIDELINES

1. Only 1 or 2 phases are to be used on a PCMS.

2. The 1st phase (or both) should be selected from the

"Road/Lane/Ramp Closure List" and the "Other Condition List".

3. A 2nd phase can be selected from the "Action to Take/Effect on Travel, Location, General Warning, or Advance Notice

Phase Lists".

4. A Location Phase is necessary only if a distance or location is not included in the first phase selected.

5. If two PCMS are used in sequence, they must be separated by and should be understandable by themselves.

6. For advance notice, when the current date is within seven days of the actual work date, calendar days should be replaced with days of the week. Advance notification should typically be for

CLOSED

BLVD

XXXXXXXX

LANE

IN

STAY

CONST AHD

CROSSING XING RT LN

Vehicles (s) VEH, VEHS

UPR LEVEL

LWR LEVEL

HR, HRS

1. The Engineer/Inspector shall approve all messages used on portable changeable message signs (PCMS).

2. Messages on PCMS should contain no more than 8 words (about four to eight characters per word), not including simple words such as "TO,"

"FOR," "AT," etc.

3. Messages should consist of a single phase, or two phases that alternate. Three-phase messages are not allowed. Each phase of the message should convey a single thought, and must be understood by itself.

"EXIT CLOSED." Do not use the term "RAMP."

5. Always use the route or interstate designation (IH, US, SH, FM) along with the number when referring to a roadway.

a minimum 7 feet above the roadway, where possible.

7. The message term "WEEKEND" should be used only if the work is to start on Saturday morning and end by Sunday evening at midnight.

Actual days and hours of work should be displayed on the PCMS if work is to begin on Friday evening and/or continue into Monday morning.

8. The Engineer/Inspector may select one of two options which are avail-able for displaying a two-phase message on a PCMS. Each phase may be displayed for either four seconds each or for three seconds each.

9. Do not "flash" messages or words included in a message. The message should be steady burn or continuous while displayed.

10. Do not present redundant information on a two-phase message; i.e., keeping two lines of the message the same and changing the third line.

12. Do not display the message "LANES SHIFT LEFT" or "LANES SHIFT RIGHT" on a PCMS. Drivers do not understand the message.

the face of the sign.

14. The following table lists abbreviated words and two-word phrases that are acceptable for use on a PCMS. Both words in a phrase must be displayed together. Words or phrases not on this list should not be

PORTABLE CHANGEABLE MESSAGE SIGNS

SHOULD BE PLACED WITH ONE DRUM AT EACH OF THE FOUR CORNERS OF THE UNIT.

OF TRAFFIC. WHEN EXPOSED TO TWO WAY TRAFFIC, THE FOUR DRUMS

UPSTREAM SIDE OF THE PCMS, WHEN EXPOSED TO ONE DIRECTION

WHEN NOT IN USE, REMOVE THE PCMS FROM THE RIGHT-OF-WAY OR PLACE THE PCMS

BEHIND BARRIER OR GUARDRAIL WITH SIGN PANEL TURNED PARALLEL TO TRAFFIC

WORD OR PHRASEABBREVIATION ABBREVIATION WORD OR PHRASE

2. When symbol signs, such as the "Flagger Symbol"(CW20-7) are represented graphically on the Full Matrix PCMS sign and, with the approval of the Engineer, it abbreviated, unless shown in the TMUTCD.

bars is appropriate.

PCMS has malfunctioned. A pattern such as a series of horizontal solid not alarm motorists and will only be used to alert workers that the

17. If disabled, the PCMS should default to an illegible display that will left or right justified.

16. Each line of text should be centered on the message board rather than and must be legible from at least 400 feet.

daylight. Truck mounted units must have a character height of 10 inches should be legible from at least 600 feet at night and 800 feet in units. They should be visible from at least 1/2 (.5) mile and the text

15. PCMS character height should be at least 18 inches for trailer mounted

13. Do not display messages that scroll horizontally or vertically across

11. Do not use the word "Danger" in message.

7-13 o f t h i s s t a n d a r d t o o t h e r f o r m a t s o r f o r i n c o r r e c t r e s u l t s o r d a m a g e s r e s u l t i n g f r o m i t s u s e k i n d d e

D O

T f o r a n y p u r p o a t s o e v e

D O

T a s s u m e s n o r e s p o n s i b i l i t y f o r t h e c o n v e r s i e u s e o f t h i s s t a n d a r d i s g o v e r n e d b y t h e

T e x g i n e e r i a c t i t r r a n t y o f a n y

D I

S C

L A I

M E

R no more than one week prior to the work.

a minimum of 1000 ft. Each PCMS shall be limited to two phases, RECOMMENDED PHASES AND FORMATS FOR PCMS MESSAGES DURING ROADWORK ACTIVITIES

Phase 2: Possible Component Lists

CAUTION

USE

Notice ListList

Warning

XX MPH

SPEED

ADVISORY

XX MPH

LIMIT

SPEED

XX MPH

SPEED

MAXIMUM

XX MPH

SPEED

MINIMUM

EXIT

LANE

RIGHT

SAFELY

DRIVE

CARE

WITH

DRIVE

X PM

XX AM-

TUE-FRI

MONDAY

BEGINS

MAY XX

BEGINS

XX AM

XX PM -

MAY X-X

X PM-X AM

XX

APR XX-

FRI-SUN

NEXT

XX PM

TO

XX AM

AUG XX

TUE

NEXT

XX AM

XX PM-

TONIGHT

Road/Lane/Ramp Closure List

(The Engineer may approve other messages not specifically covered here.)

DELAYS

EXPECT

Other Condition List

Phase 1: Condition Lists

List

Action to Take/Effect on Travel

List

Location

XXX FT

CLOSED

SHOULDER

XXX FT

CLOSED

RIGHT LN

X MILE

CLOSED

EXIT XXX

CLOSED

TO BE

RIGHT LN

CLOSED

ROAD

FRONTAGE

OPEN

LANES

RIGHT X

CLOSURES

LANE

DAYTIME

CLOSED

EXIT

I-XX SOUTH

TUE - FRI

CLOSED

X LANES

XXX FT

ROADWORK

XXXX FT

FLAGGER

XXXX FT

NARROWS

RIGHT LN

XXXX FT

TRAFFIC

MERGING

XXXX FT

GRAVEL

LOOSE

X MILE

DETOUR

SH XXXX

PAST

ROADWORK

XXXX FT

BUMP

XXXX FT

SIGNAL

TRAFFIC

XXXX FT

REPAIRS

ROAD

XXXX FT

NARROWS

LANE

XX MILE

TRAFFIC

TWO-WAY

XXXX FT

LANES

UNEVEN

XXXX FT

ROAD

ROUGH

FRI-SUN

NEXT

ROADWORK

X MILES

EXIT

US XXX

SHIFT

LANES

SOUTH

US XXX

STAY ON

RIGHT

MERGE

X EXITS

NEXT

DETOUR

US XXX N

USE

TRUCKS

TRUCKS

FOR

WATCH

XXX FT

SPEED

REDUCE

ROUTES

OTHER

USE

RIGHT

X LINES

FORM

RD EXIT

XXXXX

USE

NORTH

I-XX

USE EXIT

TO I-XX N

I-XX E

USE

TRUCKS

FOR

WATCH

DELAYS

EXPECT

STOP

TO

PREPARE

USE

SHOULDER

END

WORKERS

FOR

WATCH

FM XXXX

AT

CROSSING

RAILROAD

BEFORE

MILES

X

NEXT

EXIT

US XXX

PAST

XXXXXXX

TO

XXXXXXX

FM XXXX

TO

US XXX

XXX FT

TRAFFIC

CONST

EXIT XXX

USE

CLOSED

EXIT

X MILE

CLOSED

FREEWAY

CLOSED

LANES

RIGHT X

CLOSED

LANES

VARIOUS

AT SH XXX

CLOSED

ROAD

FM XXXX

CLSD AT

ROAD

CLOSED

LANE

CENTER

CLOSURES

LANE

NIGHT

CLOSED

DRIVEWAY

MALL

BC(6)-21

Safety Traffic

**See Application Guidelines Note 6.**

** Advance

3. When symbol signs are represented graphically on the Full Matrix PCMS, they shall only supplement the use of the static sign represented, and shall not substitute

4. Use the word "EXIT" to refer to an exit ramp on a freeway; i.e.,

6. When in use, the bottom of a stationary PCMS message panel should be

COUNTY

SECT

DIST

REVISIONS

TxDOT TxDOT TxDOT TxDOT

HIGHWAY

November 2002

SHEET 8 OF 12

4-03

9-07 mount with diagonals sloping down towards travel way

(Maximum Sign Dimension)

18" x 24" Sign

1. For long term stationary work zones on freeways, drums shall be used as the primary channelizing device.

2. For intermediate term stationary work zones on freeways, drums should be used as the primary channelizing device but may be replaced in tangent if personnel are present on the project at all times to maintain the cones in proper position and location.

3. For short term stationary work zones on freeways, drums are the preferred approved by the Engineer.

4. Drums and all related items shall comply with the requirements of the current version of the "Texas Manual on Uniform Traffic Control Devices"

(TMUTCD) and the "Compliant Work Zone Traffic Control Devices List"

(CWZTCD).

5. Drums, bases, and related materials shall exhibit good workmanship and shall be free from objectionable marks or defects that would adversely

6. The Contractor shall have a maximum of 24 hours to replace any plastic drums identified for replacement by the Engineer/Inspector. The replace-ment device must be an approved device.

1. Plastic drums shall be a two-piece design; the "body" of the drum shall be the top portion and the "base" shall be the bottom.

2. The body and base shall lock together in such a manner that the body separates from the base when impacted by a vehicle traveling at a speed of 20 MPH or greater but prevents accidental separation due to normal handling and/or air turbulence created by passing vehicles.

3. Plastic drums shall be constructed of lightweight flexible, and deformable materials. The Contractor shall NOT use metal drums or single piece plastic drums as channelization devices or sign supports.

4. Drums shall present a profile that is a minimum of 18 inches in width at the 36 inch height when viewed from any direction. The height of drum unit (body installed on base) shall be a minimum of 36 inches and a maximum of 42 inches.

5. The top of the drum shall have a built-in handle for easy pickup and shall be designed to drain water and not collect debris. The handle shall have a minimum of two widely spaced 9/16 inch diameter holes to allow attachment of a warning light, warning reflector unit or approved compliant sign.

6. The exterior of the drum body shall have a minimum of four alternating orange and white retroreflective circumferential stripes not less than

4 inches nor greater than 8 inches in width. Any non-reflectorized space between any two adjacent stripes shall not exceed 2 inches in width.

7. Bases shall have a maximum width of 36 inches, a maximum height of 4 inches, and a minimum of two footholds of sufficient size to allow base to be held down while separating the drum body from the base.

8. Plastic drums shall be constructed of ultra-violet stabilized, orange, high-density polyethylene (HDPE) or other approved material.

Chevron CW1-8, Opposing Traffic Lane

Divider, Driveway sign D70a, Keep Right channelizing device but may be replaced in tapers, transitions and tangent one-piece cones may be used with the approval of the Engineer but only

1. Signs used on plastic drums shall be manufactured using substrates listed on the CWZTCD.

2. Chevrons and other work zone signs with an orange background

3. Vertical Panels shall be manufactured with orange and white

4. Other sign messages (text or symbolic) may be used as approved by the Engineer. Sign dimensions shall not exceed

5. Signs shall be installed using a 1/2 inch bolt (nominal) and nut, two washers, and one locking washer for each connection.

6. Mounting bolts and nuts shall be fully engaged and adequately torqued. Bolts should not extend more than 1/2 inch beyond nuts.

7. Chevrons may be placed on drums on the outside of curves, on merging tapers or on shifting tapers. When used in these more than on every third drum. A minimum of three (3) should be used at each location called for in the plans.

approval of the Engineer.

8. R9-9, R9-10, R9-11 and R9-11a Sidewalk Closed signs which are 24 inches wide may be mounted on plastic drums, with

Vertical Panel

12" x 24"

ON PLASTIC DRUMS

SIGNS, CHEVRONS, AND VERTICAL PANELS MOUNTED

by Engineer

R4 series or other signs as approved

GENERAL DESIGN REQUIREMENTS

GENERAL NOTES

1. The stripes used on drums shall be constructed of sheeting meeting the

1. Unballasted bases shall be large enough to hold up to 50 lbs. of sand.

This base, when filled with the ballast material, should weigh between

35 lbs (minimum) and 50 lbs (maximum). The ballast may be sand in one to three sandbags separate from the base, sand in a sand-filled plastic base, or other ballasting devices as approved by the Engineer. Stacking of sandbags will be allowed, however height of sandbags above pavement surface may not exceed 12 inches.

2. Bases with built-in ballast shall weigh between 40 lbs. and 50 lbs.

Built-in ballast can be constructed of an integral crumb rubber base or a solid rubber base.

would become hazardous to motorists, pedestrians, or workers when the drum is struck by a vehicle.

holes in the bottoms so that water will not collect and freeze becoming a hazard when struck by a vehicle.

color and retroreflectivity requirements of Departmental Materials

2. The sheeting shall be suitable for use on and shall adhere to the drum surface such that, upon vehicular impact, the sheeting shall remain adhered in-place and exhibit no delaminating, cracking, or loss of retroreflectivity other than that loss due to abrasion of the sheeting surface.

18" minHandle n x

4" max

(typ)

8" max

4" min

(typ.)

2" max drums minimum of 5 for stacking a

Taper to allow debris of water or allow collection

Top should not warning lights signs and for mounting

9/16" dia. (typ)

DETECTABLE PEDESTRIAN BARRICADES

BALLAST

RETROREFLECTIVE SHEETING

10.Drum and base shall be marked with manufacturer's name and model number.

sections by vertical panels, two-piece cones or one-piece cones as plastic drums substrates shall NOT be used on

Plywood, Aluminum or Metal sign

36"

Barricades

Detectable Pedestrian providers of approved and the CWZTCD list for for fabrication. See note 3

This detail is not intended rail for hand trailing

Continuous smooth

Detectable Edge

2" Max.

9. Drum body shall have a maximum unballasted weight of 11 lbs.

for this type of ballast on the CWZTCD list.

3. Recycled truck tire sidewalls may be used for ballast on drums approved

4. The ballast shall not be heavy objects, water, or any material that

5. When used in regions susceptible to freezing, drums shall have drainage

6. Ballast shall not be placed on top of drums.

7. Adhesives may be used to secure base of drums to pavement.

series signs discussed in note 8 below.

18 inches in width or 24 inches in height, except for the R9

FL FL

specified in the plans.

of DMS-8300, "Sign Face Material," unless otherwise sheeting meeting the color and retroreflectivity requirements shall be manufactured with Type B or Type C Orange

7-13

CHANNELIZING DEVICES

BARRICADE AND CONSTRUCTION

F I

L E

D A

T E

Pre-qualified plastic drums shall meet the following requirements:

o f t h i s s t a n d a r d t o o t h e r f o r m a t s o r f o r i n c o r r e c t r e s u l t s o r d a m a g e s r e s u l t i n g f r o m i t s u s e k i n d d e

D O

T f o r a n y p u r p o a t s o e v e

D O

T a s s u m e s n o r e s p o n s i b i l i t y f o r t h e c o n v e r s i e u s e o f t h i s s t a n d a r d i s g o v e r n e d b y t h e

T e x g i n e e r i a c t i t r r a n t y o f a n y

D I

S C

L A I

M E

R affect their appearance or serviceability.

BC(8)-21

Safety Traffic orange.

top stripe being sheeting with the retroreflective using Type A or Type B and 2 white stripes a minimum of 2 orange

Each drum shall have in the plans.

reflective sheeting shall be supplied unless otherwise specified

Specification DMS-8300, "Sign Face Materials." Type A or Type B the intended traveled lane.

Diagonal stripes on Vertical Panels shall slope down toward sheeting meeting the requirements of DMS-8300 Type A or Type B.

sections by vertical panels, or 42" two-piece cones. In tangent sections, locations, they may be placed on every drum or spaced not

Note 3

See Ballast splinters, burrs, or sharp edges.

a smooth continuous rail suitable for hand trailing with no rails as shown on BC(10) provided that the top rail provides

6. Detectable pedestrian barricades should use 8" nominal barricade barricades.

5. Warning lights shall not be attached to detectable pedestrian movements.

(ADAAG)" and should not be used as a control for pedestrian

"Americans with Disabilities Act Accessibility Guidelines detectable, do not comply with the design standards in the

4. Tape, rope, or plastic chain strung between devices are not path.

detectable edging can satisfactorily delineate a pedestrian barriers, and wood or chain link fencing with a continuous above, longitudinal channelizing devices, some concrete

3. Detectable pedestrian barricades similar to the one pictured of a Type 3 Barricade.

placed across the full width of the closed sidewalk instead closed sidewalk, a Detectable Pedestrian Barricade shall be

2. Where pedestrians with visual disabilities normally use the

Diversions, Sidewalk Detours and Crosswalk Closures.

to WZ(BTS-2) for Pedestrian Control requirements for Sidewalk the features present in the existing pedestrian facility. Refer detectable and include accessibility features consistent with relocated in a TTC zone, the temporary facilities shall be

1. When existing pedestrian facilities are disrupted, closed, or

COUNTY

SECT

DIST

REVISIONS

TxDOT TxDOT TxDOT TxDOT

HIGHWAY

SHEET NO.

C TxDOT CONT bc-21.dgn

November 2002

SHEET 10 OF 12

9-07

1. Where positive redirectional

2. Plastic construction fencing safety as required in the plans.

3. Vertical Panels on flexible support capability is provided, drums may be omitted.SB

SB

SB

SB

may be used with drums for may be omitted if drums are used.

Detour

Roadway

R11-2

M4-10L DETOUR

ROAD

CLOSED

NAME

ADDRESS

CITY

STATE

CONTRACTOR

30 feet

3"-4"

6" min.

4" min.

2" min.

shoulder width is less than 4 feet.

than 12 feet, steady-burn lights

PLAN VIEW

PLAN VIEW

2. Advance signing shall be as specified elsewhere in the plans.

PERSPECTIVE VIEW

PERSPECTIVE VIEW

3"-4"

2" min.

10' may be substituted for drums when the

4. When the shoulder width is greater

2" min.

2" min.

4" min. orange

4" min. white

4" min. orange

4" min. white

Drums, vertical panels or 42" cones

STOCKPILE

at 50' maximum spacing omitted here or barricade may be downstream drums

On one-way roads within 30' from travel lane.

should be used when stockpile is

Channelizing devices parallel to traffic

Two-Piece cones

G20-6T

SB

CONES

Alternate Alternate clear zone.

is outside stockpile location

Desirable

Plastic Drum

Typical min.

28" min.

42" on one-way roadway are not required

These drums barricaded in the same manner.

divided highway shall be

Each roadway of a and maximum of 4 drums) width makes it necessary. (minimum of 2 side of approaching traffic if the crown

Increase number of plastic drums on the b e u s e d a c r o s s t k e a n i m u m o f t w o d r u m s s h a l l

50'

Approx.

50'

Approx.

1. Refer to the Compliant Work Zone Traffic Control Devices List (CWZTCD) projects closed to all traffic.

3. Barricades extending across a roadway should have stripes that slope downward in the direction toward which traffic must turn in detouring.

When both right and left turns are provided, the chevron striping may slope downward in both directions from the center of the barricade.

downward in both directions toward the center of roadway.

4. Striping of rails, for the right side of the roadway, should slope downward to the left. For the left side of the roadway, striping should slope downward to the right.

5. Identification markings may be shown only on the back of the barricade rails. The maximum height of letters and/or company logos used for identification shall be 1".

6. Barricades shall not be placed parallel to traffic unless an adequate clear zone is provided.

7. Warning lights shall NOT be installed on barricades.

8. Where barricades require the use of weights to keep from turning over, the use of sandbags with dry, cohesionless sand is recommended. The sandbags will be tied shut to keep the sand from spilling and to maintain a constant weight. Sand bags shall not be stacked in a manner that covers any portion of a barricade rails reflective sheeting.

Rock, concrete, iron, steel or other solid objects will NOT be permitted. Sandbags should weigh a minimum of 35 lbs and a maximum of

50 lbs. Sandbags shall be made of a durable material that tears upon vehicular impact. Rubber (such as tire inner tubes) shall not be used for sandbags. Sandbags shall only be placed along or upon the base supports of the device and shall not be suspended above ground level or hung with rope, wire, chains or other fasteners.

be used as a sign support.

Barricades shall NOT x x x or yellow warning reflector

Steady burn warning light or yellow warning reflector

Plastic drum with steady burn light

Plastic drum

LEGEND

of the culvert widening.

5. Drums must extend the length

CULVERT WIDENING OR OTHER ISOLATED WORK WITHIN THE PROJECT LIMITS

TRAFFIC CONTROL FOR MATERIAL STOCKPILES

TYPICAL PANEL DETAIL

FOR SKID OR POST TYPE BARRICADES

TYPICAL STRIPING DETAIL FOR BARRICADE RAIL

8' max. length Type 3 Barricades downward in the direction of detour.

Barricade striping should slant for two-way traffic.

facing one-way traffic and both sides reflective white stripes on one side shall be reflectorized orange and

The three rails on Type 3 barricades barricade or 1 Type 3

Min. 2 drums barricade or 1 Type 3

Min. 2 drums

TYPE 3 BARRICADES

2. Type 3 Barricades shall be used at each end of construction

TYPE 3 BARRICADE (POST AND SKID) TYPICAL APPLICATION

minimum of 10 feet behind Type 3 Barricades.

mounting height in center of roadway. The signs should be a

1. Signs should be mounted on independent supports at a 7 foot o

6" 6" 7 inches.

Sheeting

Reflective

Width of

Minimum nominal

8"

7-13

BC(10)-21

CHANNELIZING DEVICES

BARRICADE AND CONSTRUCTION

o f t h i s s t a n d a r d t o o t h e r f o r m a t s o r f o r i n c o r r e c t r e s u l t s o r d a m a g e s r e s u l t i n g f r o m i t s u s e k i n d d e

D O

T f o r a n y p u r p o a t s o e v e

D O

T a s s u m e s n o r e s p o n s i b i l i t y f o r t h e c o n v e r s i e u s e o f t h i s s t a n d a r d i s g o v e r n e d b y t h e

T e x g i n e e r i a c t i t r r a n t y o f a n y

D I

S C

L A I

M E

R

F I

L E

D A

T E for details of the Type 3 Barricades and a list of all materials used in the construction of Type 3 Barricades.

Flat rail

Stiffener

2 stiffeners shall be allowed on one barricade.

Stiffener may be inside or outside of support, but no more than

4' min., 8' max.

Safety Traffic

2" max.3"-4"

6" min.

4" min.

3" min.

3" min.

2" min.

One-Piece cones Tubular Marker

2" to 6" min.

28" min.

28" otherwise noted.

conforming to Departmental Material Specification DMS-8300 unless

9. Sheeting for barricades shall be retroreflective Type A or Type B

Where no turns are provided at a closed road, striping should slope

30 lbs. including base.

42" 2-piece cones shall have a minimum weight of

28" Cones shall have a minimum weight of 9 1/2 lbs.

1. Traffic cones and tubular markers shall be predominantly orange, and meet the height and weight requirements shown above.

2. One-piece cones have the body and base of the cone molded in one consolidated unit. Two-piece cones have a cone shaped body and a separate rubber base, or ballast, that is added to keep the device upright and in place.

height shown, in order to aid in retrieving the device.

3. Two-piece cones may have a handle or loop extending up to 8" above the minimum

7. Cones or tubular markers used on each project should be of the same size and shape.

to maintain them in their proper upright position.

for intermediate-term or long-term stationary work unless personnel is on-site short-term stationary work as defined on BC(4). These should not be used

5. 28" cones and tubular markers are generally suitable for short duration and durations.

6. 42" two-piece cones, vertical panels or drums are suitable for all work zone

Specification DMS-8300 Type A or Type B.

outer surface and meet the requirements of Departmental Material bands as shown above. The reflective bands shall have a smooth, sealed

4. Cones or tubular markers shall have white or white and orange reflective f t h i s s t a n d a r d t o o t h e r f o r m a t s o r f o r i n c o r r e c t r e s u l t s o r d a m a g e s r e s u l t i n g f r o m i t s u s e k i n d d e

D O

T f o r a n y p u r p o a t s o e v e

D O

T a s s u m e s n o r e s p o n s i b i l i t y f o r t h e c o n v e r s i e u s e o f t h i s s t a n d a r d i s g o v e r n e d b y t h e

T e x g i n e e r i a c t i t r r a n t y o f a n y

D I

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L A I

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F I

L E

D A

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SHEET 11 OF 12

TOP VIEW FRONT VIEW SIDE VIEW

Adhesive pad

4"+ ‚"

2"

GENERAL REMOVAL OF PAVEMENT MARKINGS

1. The Contractor shall be responsible for maintaining work zone and within the CSJ limits unless otherwise stated in the plans.

2. Color, patterns and dimensions shall be in conformance with the

"Texas Manual on Uniform Traffic Control Devices" (TMUTCD).

3. Additional supplemental pavement marking details may be found in the plans or specifications.

4. Pavement markings shall be installed in accordance with the TMUTCD and as shown on the plans.

5. When short term markings are required on the plans, short term markings shall conform with the TMUTCD, the plans and details as shown on the Standard Plan Sheet WZ(STPM).

6. When standard pavement markings are not in place and the roadway is opened to traffic, DO NOT PASS signs shall be erected to mark the beginning of the sections where passing is prohibited and

PASS WITH CARE signs at the beginning of sections where passing is permitted.

7. All work zone pavement markings shall be installed in accordance with Item 662, "Work Zone Pavement Markings."

RAISED PAVEMENT MARKERS

1. Raised pavement markers are to be placed according to the patterns on BC(12).

2. All raised pavement markers used for work zone markings shall meet

PREFABRICATED PAVEMENT MARKINGS

1. Removable prefabricated pavement markings shall meet the requirements of DMS-8241.

2. Non-removable prefabricated pavement markings (foil back) shall meet the requirements of DMS-8240.

MAINTAINING WORK ZONE PAVEMENT MARKINGS

1. The Contractor will be responsible for maintaining work zone pavement markings within the work limits.

2. Work zone pavement markings shall be inspected in accordance with the frequency and reporting requirements of work zone traffic control device inspections as required by Form 599.

3. The markings should provide a visible reference for a minimum distance of 300 feet during normal daylight hours and 160 feet when illuminated by…