641TRAFFIC CONTROL

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6-164SECTION 641 – TRAFFIC CONTROL

641.01DESCRIPTION . This work shall consist of establishing and maintaining traffic control measures

to protect the traveling public, including bicyclists and pedestrians, and construction operations. The requirements for uni formed traffic officers (UTOs) and flaggers used in conjunction with traffic control shall be as specified in Section 630 .

641.02GENERAL CONSTRUCTION REQUIREMENTS

reference to the requirements of Subsection 107.0 8. The Contractor shall establish traffic controls to divert traffic from the area of construction operations during working hours in accordance with the Contract or as authorized by the Engineer . Working hours shall be as specified in the Contract. If the Contractor desires to work at night, as defined in Subsection 101.02 , a written request shall be submitted to the Engineer in accordance with Subsection 641.03 . During hours other than working hours, all highway facilities, including sidewalks, shall be open to the unrestricted flow of traffic, unless otherwise specified. Traffic control devices, equipment, and materials shall be removed from the traveled way, auxiliary lanes, ramps, and shoulders. Traffic signs related to traffic control for construction operations shall be removed, covered, or turned so they are not readable from the highway. All equipment and materials shall be stored outside of the travel lanes, shoulders, and clear zone for the facility. When work is in progress within an interchange area, no more than one ramp at a time may be closed to traffic. Traf fic service that would be eliminated by the closing of a ramp shall be maintained elsewhere as specified in the Contract or as authorized by the Engineer.

an Agency -designed traffic control plan. The Contractor may implement the Agency -designed plan or submit an alternate traffic control plan for the project. When the Contracto r will implement an Agency -designed traffic control plan, written certification shall be submitted to the Engineer indicating that traffic control will be performed in accordance with the Agency design. The Contractor may choose to submit an alternate tr affic control plan for the entire project or submit modifications to various phases of the Agency’s design in the Plans, including the specific location of the lanes where the traffic will be maintained. Any alternate plan submitted shall conform to the MUTCD .

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6-165For an alternate traffic control plan, construction drawings shall be submitted in accordance with

Subsection 105.06 . The submitted alternative plan shall include complete construction details, including all aspects of traffic control, to the same extent provided in the Agency design.

item, the Contractor shall design and submit a site -specific traffic control plan in accordance with Subsection 10 5.06. The submitted site -specific plan shall include, for each phase of construction requiring a significant change in temporary traffic control, a narrative description of the proposed temporary traffic control for each phase, including pedestrian accommo dations where appropriate, and the major work activities to be completed in each phase. The submitted site -specific plan shall also include a layout for each phase of construction showing existing lane configurations, existing traffic control devices (sig ns, signals, and pavement markings), driveways, ramps, and highway intersections, and the location of all proposed temporary traffic control devices, flaggers, and UTOs. All pertinent dimensions, such as taper lengths, sign spacing, temporary lane widths, and distances from existing traffic control devices shall be labeled.

Traffic pay item, the Contractor shall design and submit a site -specific temporary pedestrian access route (TPAR) traffic control plan in accordance with Subsection 105.06 . The Contractor shall pro vide measures that establish and maintain the TPAR through the work zones in compliance with the MUTCD , the Public Rights -of-Way Accessibility Guidelines , and the Agency ’s Work Zone Safety & Mobility Policy and Guidance . The various devices or features shall be installed in a uniform manner to provide a consistent accessible route for pedestrians. The submitted site -specific plan shall also include a layout for each phase of construction showing existing sidewalks and shared use paths, existing traffic contro l devices (signs, signals, and pavement markings), driveways, ramps, highway intersections, and the location of all proposed temporary traffic control devices, pedestrian channelizing devices, and temporary curb ramps. All pertinent dimensions, such as tem porary sidewalk width, sign spacing, length of channelizing devices and the distance from existing features, shall be labeled. At the conclusion of construction, all temporary items related to the provision of the TPAR shall be removed and the area in whic h they were installed restored to previous conditions to the satisfaction of the Engineer.

641 6-166 641.03 NIGHT WORK .

request to do so to the Engineer, unless night work is explicitly allowed or required by the Contract. The Contractor shall justify the request and detail the enhanced safety procedures they propose to protect the safety of the traveling public and project personnel. The request shall be s ubmitted at least 21 calendar days prior to the date the Contractor plans to begin night work. All work performed at night shall comply with the noise restrictions specified in Subsection 105.14 and the Contract.

addresses each type of work zone expected to be used on the project and include it as part of the traffic control plan submittal. The Contractor shall not perform any night work or night activities within the project limits until the lighting plan has been approved and the lighting system is in place on the project. The lighting plan shall describe the lights to be used and how the Contractor’s operations will minimize the potential for glare. The designed lighting system shall be portable and illumi nate the entire work area to the minimum level of illuminance required in different work areas and for different tasks. The lighting system shall not cause excessive shadows or light patterns. A light meter shall be provided to the Engineer to confirm ligh ting conditions meet minimum lighting plan requirements.

package does not move or only moves periodically (e.g. bridge construction and paving operations). The lighti ng plan shall include a narrative description of the light fixtures and light towers to be used, including the number, spacing, wattage, and lamp configuration. Light fixture and light tower specification sheets with photometric data and the minimum illumi nance intensities to be measured in foot -candles for various work situations shall be submitted. The lighting plan shall take into consideration the guidelines provided in NCHRP Report 476.

moves intermittently or continuously (e.g. line striping and crack sealing) . Mobile nighttime work shall be performed in accordance with the FHWA Traffic Control Handbook for Mobile Operations at Night . Mobile work zones may have li ghts mounted to vehicles.

641 6-167 641.04 TEMPORARY TRAFFIC CONTROL SIGNAL SYSTEMS .

existing or Contractor provided materials and equipment, including, but not limited to, controllers, flashers, wiring, conduit, strain poles, associated signs, sign posts, pavement markings, electrical service, vehicle detectors, span wires, interconnect cables, signal heads, and portable signal carts. The temporary signal system shall include all signals and other components necessary to cover every approach to the work zone or lane restriction . The proposed location and operation of the temporary traffic signal equipment shall be shown on the Contractor’s traffic control plan. Temporary traffic control signal systems shall meet the following requirements:

load requirements.

batteries. The batteries shall allow the system to be operable for a minimum of 20 days without additional solar power. The batteries shall be housed and secured within a steel lock down box.

management unit.

vehicle detection, including signal pree mption for emergency vehicles.

accordance with the applicable requirements of Section 646 , Section 675 , Section 677 , Section 678, and Section 679 , with the following modifications:

shall repair or replace defective equipment at no cost to the Agency.

641 6-168 (3) During installation of the temporary traffic signal systems, no conduit shall be placed under the existing roadway.

other required materials, shall be in place and operating correctly prior to the start of the part of the project requiring its operation. Removal of the temporary signal system in its entirety and restoration of the disturbed areas shall constitute completion of the item.

electrical power for the temporary traffic signal system.

to turning off the existing traffic control signals or installing any temporary signals.

otherwise shown on the Plans.

may be of the type and manufacture chosen by the Contractor. However, the furnished detector must function properly and provide the actuation required for the specific installed site. If, in the opinion of the Engineer, the furnished detector either does not function properly or does not perform the req uired actuation, the Contractor shall replace the detector within 24 hours of receiving notice to do so from the Engineer, at no cost to the Agency.

641.05TRAFFIC CONTROL DEVICES . All traffic control devices shall conform to the requirements

of Subsectio n 107.08 , the Contract, and the MUTCD. Traffic control devices required in the performance

of this work may include, but are not limited to, lane markings, barricades, signs with yielding posts or

portable supports, reflectorized drums, traffic cones, delineators, portable arrow boards, portable

changeable message signs, traffic signal lights, and street lighting. In addition, flashing warning lights

may be required by the Engineer for use on signs and barricades to improve visibility.

The location of traffic control devices shall be adjusted in the field as directed by the Engineer to provide

maximum visibility and usefulness. When protected by guardrail, these devices shall be placed outside

the deflection distance of the particular guardrail in use.

All temporary construction signs shall meet the following requirements:

stands and post installations shall meet the requirements of NCHRP Report 350 or MASH. The

appropriate resource shall be determined as described in the MASH publication.

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retroreflective sheeting.

VIII, or Type IX fluorescent orange retroreflective sheeting.

material.

square steel posts inserted in 2-1/4 inch galvanized square steel anchors. No sign posts shall extend

over the top edge of the sign installed on said posts.

traffic control devices, stopping sight distance, and corner sight distance from drives and town

highways.

Traffic cones shall be orange, at least 28 inches high, and shall be spaced as shown on the Plans. They

shall be weighted or nailed for stabilization. Tires may be used to stabilize the cones only if they have

been circumferentially sliced to a minimum of 50% of their original thickness.

At a minimum, all retroreflective sheeting on traffic cones, barricades, and drums shall be ASTM D4956,

Type III sheeting.

A temporary pedestrian surface shall be provided in areas that are not accessible, such as those with a

grass or loose aggregate surface. The temporary pedestrian surface shall be smooth, stable, and slip

resistant. If an aggregate surface is proposed, it shall meet the requirements of Subsection 704.12(b).

Temporarily installed or relocated crosswalks shall include temporary ramps that comply with the Public

Rights of Way Accessibility Guidelines to allow access to sidewalks. Temporarily installed or relocated

crosswalks shall include appropriate warning signs, temporary pavement markings, and temporary

walkway surfaces to connect them to existing pedestrian routes.

Pedestrian channelizing devices shall comply with the MUTCD.

Portable changeable message signs (PCMSs) shall be used with a maximum of two phases, each consisting

of a maximum of three lines of eight characters. Each PCMS unit shall be tamper-resistant and the control

cabinet shall be locked when not in use. Each PCMS shall have a security system that will only allow

access if a code or password is entered. The default code or password shall be changed upon deployment

of the PCMS by the Contractor. PCMSs featuring remote access shall also be password protected.

Portable arrow boards (PABs) shall conform to Type C portable arrow board requirements in the MUTCD.

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The Contractor shall operate and maintain the PCMSs or PABs as recommended by the manufacturer.

The locations of the units and the messages to be used shall be as specified in the traffic control plan

shown in the Plans or as directed by the Engineer. The Contractor shall supply the Engineer with the name

and telephone number of the Contractor’s responsible person in charge of the placement, maintenance,

and repair of the PCMSs or PABs and their components for the duration of the Contract.

If PCMS or PAB pay items are included in the Contract, the Contractor shall maintain one spare PCMS

unit, or a PAB unit if no PCMS unit is being used, on site to replace a non-operational unit if necessary.

If any unit becomes non-operational during use, and a replacement unit is not available, the Contractor

shall provide flaggers or other approved traffic control methods until the unit is repaired or replaced, at no

additional cost to the Agency. Non-operational units shall be repaired or replaced as soon as possible, but

no later than 24 hours after the Engineer determines that repairs or replacement are necessary.

The Contractor shall conduct daily inspections of both daytime and nighttime operations to ensure proper

placement, maintenance, and operation of all traffic control devices. Traffic control devices shall be kept

clean to ensure that they are clearly visible at all times.

Deficient traffic control devices shall be repaired or replaced as soon as possible. Time lost due to failure

to correct deficient traffic control devices will not be considered justifiable cause for granting an extension

of time in accordance with Subsection 108.11.

641.06PERSONNEL. Personnel involved with the placement and use of traffic control devices shall

receive orientation and explanation of the requirements of the MUTCD and the special project

requirements prior to working on the project. The orientation and explanation are the Contractor’s

responsibility.

641.07SPEED ZONE ENACTMENT. If the traffic control plan included in the Plans is based on a

recommended speed limit reduction, or if a speed limit reduction is requested by the Contractor, the

Agency will obtain the necessary permit for this speed reduction. In either case, the Contractor shall

provide the Agency with a written plan of work and a detailed sketch of the work zones that will be the

basis for the permit application. The Contractor shall allow three weeks for the permit to be processed.

The traffic control plan shall not be implemented until the permit is approved.

Speed zones, if used, should be a maximum of 10 mph below existing posted speeds. Temporary speed

limit certificates must be approved by the Chief Engineer.

641.08METHOD OF MEASUREMENT. The quantity of Traffic Control; Traffic Control, All-

Inclusive; and Maintenance of Pedestrian Traffic to be measured for payment will be on a lump sum basis

for the complete and accepted work.

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The quantities of Portable Changeable Message Sign and Portable Arrow Board to be measured for

payment will be the number of each type of unit specified and used on the project. A unit shall consist of

the designated sign panel or board complete with controller, power supply, fuel, backup power supply,

and trailer, installed, maintained, and removed as indicated on the Plans and directed by the Engineer.

The quantities of Portable Changeable Message Sign Rental and Portable Arrow Board Rental to be

measured for payment will be the number of days of the type specified, as authorized in writing by the

Engineer. The minimum quantity to be measured for payment will be five days.

The quantity of Temporary Traffic Control Signal System, Portable and Temporary Traffic Control Signal

System, Fixed to be measured for payment will be the number of each system installed in the complete

and accepted work, maintained during construction, and then removed from the project when the Engineer

determines it is no longer required.

641.09BASIS OF PAYMENT

accepted quantity of Traffic Control; Traffic Control, All-Inclusive; and Maintenance of

Pedestrian Traffic will be paid for at the Contract lump sum price. Payment will be full

compensation for designing, preparing, implementing, inspecting, maintaining, cleaning, and

removing the applicable traffic control plan and specified traffic control devices, and for furnishing

all labor (including traffic patrol vehicle operators, if used by the Contractor), tools, materials,

equipment, and incidentals necessary to complete the work. If a lighting plan is required, all costs

associated with designing and implementing the plan, including any necessary lighting systems or

traffic control devices, will be considered incidental to the appropriate traffic control item.

Partial payments for Traffic Control; Traffic Control, All-Inclusive; and Maintenance of

Pedestrian Traffic will be made as follows:

certification from the Contractor that traffic control will be performed in accordance with

the Agency-designed traffic control plan, or upon approval of the Contractor’s traffic

control plan.

duration of the Contract work remaining.

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Changeable Message Sign and Portable Arrow Board will be paid for at the Contract unit price for

each. There will be no payment for any spare units, as they shall be considered incidental to the

units being used and paid for through the Contract.

Partial payments for Portable Changeable Message Sign and Portable Arrow Board will be made

as follows:

Changeable Message Signs and Portable Arrow Boards as specified in Subsection 641.08.

duration of the Contract work remaining.

The accepted quantities of Portable Changeable Message Sign Rental and Portable Arrow Board

Rental will be paid for at the Contract unit price per day.

Payment for the accepted quantities of Portable Changeable Message Sign, Portable Arrow Board,

Portable Changeable Message Sign Rental, and Portable Arrow Board Rental will be full

compensation for furnishing, operating, maintaining, transporting, and installing the unit specified,

for removing the unit when it is no longer needed, and for furnishing all labor, tools, equipment,

and incidentals necessary to complete the work.

When both pay items are in the Contract, a PCMS used as a PAB will be paid for at the Contract

unit price for Portable Arrow Board.

Signal System, Portable and Temporary Traffic Control Signal System, Fixed will be paid for at

the Contract unit price per each. Payment will include the set up and removal of trailer and trailer

poles or strain poles, as applicable, signal heads, controller and cabinet, luminaires, power source,

and all other materials necessary for a fully operational temporary traffic control signal system.

Partial payments will be made as follows:

has been set up at a site (including signing and pavement markings) and working for 24

hours to the satisfaction of the Engineer.

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been in place and operational for 30 calendar days or work is complete, whichever occurs

first.

of the system from the site and restoration of disturbed areas.

No additional payment will be made for moving, relocating, or resetting temporary traffic control

signal system components, either as directed by the Engineer or for the convenience of the

Contractor.

Payment will be made under:

Pay Item Pay Unit

641.1000 Traffic Control ..........................................................................................Lump Sum

641.1100 Traffic Control, All-Inclusive ...................................................................Lump Sum

641.1200 Maintenance of Pedestrian Traffic ............................................................Lump Sum

641.1500 Portable Changeable Message Sign ..........................................................Each

641.1600 Portable Arrow Board ...............................................................................Each

641.1700 Portable Changeable Message Sign Rental...............................................Day

641.1800 Portable Arrow Board Rental....................................................................Day

641.2100 Temporary Traffic Control Signal System, Fixed ....................................Each

641.2200 Temporary Traffic Control Signal System, Portable ................................Each

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6-174SECTIO N 646 – PAVEMEN T MARKINGS

646.0 1 DESCRIPTION . This work shall consist of furnishing, installing, removing, and masking pavement markings, including durable, nondurable, and temporary markings on pavement and other surfaces. 646.0 2 MATERIALS . Materials shall meet the requirements of the following subsections: Polyurea Pavement Markings ................................ ................................ .................... 708.0 7(a) Epoxy Paint ................................ ................................ ................................ ................ 708.0 7(b) Waterborne Traffic Paint ................................ ................................ ........................... 708.0 7(c) Thermoplastic Pavement Markings, Type A ................................ ............................. 708.08(a) Thermoplastic Pavement Markings, Type B ................................ ............................. 708.08(b) Line Striping Targets ................................ ................................ ................................ .708.09(a) Pavement Marking Mask ................................ ................................ ........................... 708.09(b) Optics ................................ ................................ ................................ ......................... 754.01 Pavement Marking Tape ................................ ................................ ............................ 754.0 2 Colored Surface Treatment ................................ ................................ ........................ 754.0 6 Pavement marking materials furnished shall be the ones shown on the Plans or listed in these specifications as being acceptable for the project. The Contractor may submit alternate materials for approval in accordance with Subsecti on 646.1 6. 646.0 3 CLASSIFICATION .

pavement markings that provide different levels of reflectivity.

applications.

polyurea paint, and extruded thermoplastic.

preformed thermoplastic, Type A pavement marking tape, and Type B pavement marking tape .

marking tape, pavement marking mask, line striping targets, and paint.