Section 2528. Traffic Control.

2528.01 DESCRIPTION.
This section describes various materials, equipment, and procedures involved in traffic control during construction. The Contractor and the Contracting Authority have certain responsibilities, whether public traffic is allowed or is prohibited during construction, and Article 1107.09 shall apply.

The contract may include an item for traffic control, in which case the Contractor shall furnish, erect, operate, maintain, move, and remove all traffic control devices required by the contract documents.

The contract may indicate that traffic control is incidental, in which case the Contracting Authority will furnish all signs and traffic control devices, except pilot car and flaggers' signs, and all Type III barricades, and mounting devices therefor, and the Contractor shall furnish all other traffic control devices required. The Contractor shall erect, operate, maintain, move, and remove all traffic control devices. Signs and barricades to be furnished by the Contracting Authority will be made available at a nearby maintenance site, and they shall be returned when no longer needed.

The contract documents may specify that orange mesh safety fence be used in conjunction with other traffic control devices as part of the project traffic control requirements. The orange mesh safety fence shall meet the requirements of Article 4188.03. The safety fence used in this situation shall be securely supported so the fence is in a vertical position without any sagging. The safety fence supports shall be placed and located so they are not a safety hazard.

All traffic control shall be in accordance with the current edition of the MUTCD, Part VI as adopted by the Department.

All Category I and Category II traffic control signs and devices used on Interstate and Primary Road projects shall meet National Cooperative Highway Research Program (NCHRP) Report 350. Category I devices are defined as low mass, single-piece traffic cones, tubular markers, single-piece drums, and delineators. No lights or signs may be attached to these devices in order for them to meet the Category I limitations. Category II devices are defined as vertical panels, Type I, II, and III barricades, and moveable skid mounted sign stands.

It shall be the responsibility of the Contractor to provide the vendor's self-certification for Category I devices and the FHWA NCHRP 350 approval memos for Category II signs and devices, to the Engineer to document crashworthiness of their Category I and II traffic control signs and devices. A list of approved Category II traffic control devices is found on the World Wide Web at the following URL: http://safety.fhwa.dot.gov/ fourthlevel/hardware/wzd.htm.

Gender specific signs, such as FLAGMAN and MEN WORKING, will not be allowed. The signs shall either be neutral gender, as FLAGGER, or equivalent symbol signs.

A. Monitoring With Incident Response.
The Contractor shall provide 24 hour per day continuous monitoring of traffic control devices and incident response for emergency situations on projects during complex traffic situations as defined in the contract documents. The contract documents will identify projects requiring monitoring with incident response. A vehicle and operator shall be traversing the project throughout the entire traffic control zone at all times, except for refueling and short rest breaks no greater than 15 minutes in duration.

This work shall be furnished in accordance with the contract documents any time that signs, barriers, barricades, or other traffic control devices are in place during complex traffic situations.

The Contractor shall provide a vehicle and operator for this work as follows:

1. Equipment.
The vehicle shall be a 3/4 ton (or metric equivalent) pickup truck or another vehicle in good condition with adequate weight and power and suitably equipped to move stalled automobiles or pickup trucks. The vehicle shall carry the Contractor's insignia and shall be equipped with an amber revolving light or amber strobe light visible in all directions and a cellular telephone or similar type of mobile phone. The vehicle shall be capable of carrying traffic signs, tools, traffic control devices, and other necessary equipment. When used on projects where more than one lane in one direction is maintained at all times, this vehicle shall also be equipped with a Type C arrow panel as described in Article 2528.06 mounted to be visible to traffic approaching from behind.

2. Operation.
The Contractor shall furnish an operator for the vehicle. Defective devices shall be re-erected, repaired, or replaced by the operator immediately upon discovery. The operator and vehicle are to be available to assist persons with vehicle problems and to move automobiles, pickup trucks and other obstructions so as to keep all travel lanes and shoulders available for public traffic. Assistance to motorists and involvement with obstructions shall continue until they are no longer an impediment to traffic and further assistance can be provided safely by others. When a vehicle or anything else is obstructing a travel lane or shoulder intended to be clear, the operator shall assist the motorist or remove the obstruction promptly and safely. If further assistance is needed, it is to be summoned.

The operator shall keep a report of any events that restrict the normal traffic flow during complex operations, including responses to emergency situations, on forms provided by the Engineer. A copy of this report shall be provided to the Engineer daily.

The Contractor may be requested by the Engineer to operate project related Changeable Message Signs (CMS) for advance traffic notification and warning. Authority to operate CMS units will be under the direction of the Engineer according to the contract documents. Only the Engineer may add or modify any preprogrammed messages. The Contractor may only operate the CMS to display one of the preprogrammed messages.

During anticipated peak traffic times, the Engineer may direct the Contractor to provide additional monitoring personnel for CMS operation and other traffic monitoring functions.

B. Traffic Quality Control
The Contractor shall have a Traffic Control Technician on staff, even though the traffic control portion of the contract may be subcontracted. The Traffic Control Technician shall have attended and passed the exam in an American Traffic Safety Services Association (ATSSA) Traffic Control Technician or IMSA Work Zone Traffic Control training class. This Traffic Control Technician shall be responsible for overall management of the Contractor's quality control program for traffic control.

The Contractor shall perform the following quality control work associated with monitoring and documenting traffic control conditions daily as the project is constructed:

1. Review all traffic control operations for compliance with contract documents and maintain a project traffic control daily diary, in a format provided by the Contracting Authority, which shall be submitted to the Engineer and will become a part of the Contracting Authority's permanent project records. The Engineer may require submission of completed portions of the daily diary at routine intervals during construction of the project. The diary shall include:

a. listing and station location of traffic control used each day referenced to the appropriate Standard Road Plan, project plan sheet, etc.,
ab. all reviews of traffic control devices and operations, whether satisfactory or unsatisfactory, and corrections made,
bc. approved changes to the contract document's traffic control,
cd. incidentals affecting the efficiency and safety of traffic,
de. a daily list of trained flaggers used, including hours worked on the project.

2. Monitor traffic operations and submit proposed Traffic Control Plan changes to the Engineer for approval.

3. Coordinate all changes to the Traffic Control Plan.

4. Coordinate all traffic control operations, including those of subcontractors and suppliers.

The Contractor shall have a technician on staff that has attended and passed the exam in an ATSSA Traffic Control Technician or International Municipal Signal Association (IMSA) Work Zone Traffic Control training class even though the Traffic Control portion of the contract may be subcontracted. This Traffic Control Technician shall be responsible for the overall management of the Contractor's quality control program for traffic control.

2528.02 SIGNS.
Signs shall be of the size and type shown in the contract documents and shall utilize retroreflective sheeting meeting requirements of Article 4186.03. For Interstate and Primary projects, diamond shaped warning signs shall be 48 inches (1200 mm) by 48 inches (1200 mm) unless otherwise specified in the contract documents. Signs for traffic control zones in duration for 4 calendar days or more shall be mounted on fixed posts. Signs for traffic control zones in duration for less than 4 calendar days may be mounted on moveable skids or fixed posts. Fixed post mounted signs shall have the sign sheeting applied to rigid wood or metal and shall be mounted at a height of at least 7 feet (2.2 m), measured from the bottom of the sign to the near edge of the pavement. A secondary sign on the same post may be mounted 1 foot (0.3 m) lower than specified above. Post-mounted signs shall have a clear distance 2 feet (0.6 m) behind a curb or beyond the edge of the shoulder. Moveable skid mounted signs shall use flexible roll-up sheeting or other skid mounted sign systems that meet NCHRP 350 requirements. Moveable skid mounted signs shall be mounted at a height of at least 1 foot (0.3 m) above the roadway.

Mounting devices shall not be so substantial as to be a hazard to vehicles. Posts mounted in existing soil shall meet the following requirements:

1. Wood sign supports meeting the materials requirements of Article 4164.04

2. 3.0 pounds per foot (4.5 kg/m) U-shaped rail steel posts.

3. 2 1/4 or 2 1/2 inch (60 mm or 65 mm) square 12 gauge perforated steel tubing.

Dual-post and triple-post configurations using these sign supports are acceptable provided that no more than two posts occupy any 8 foot (2.4 m) wide path. Bracing of these posts will not be permitted. Posts exceeding these requirements shall have breakaway features approved by the Engineer.

Signs shall be in a condition so they are effective for the intended purposes when viewed from a vehicle. For nighttime installations, the reflectance shall be adequate so that the message is clearly readable. Signs shall be maintained in a near vertical position.

When indicated in the contract documents, supplemental sign flags shall be used in conjunction with work zone signing. The sign flags shall be 16 inches (400 mm) square and sheeted with red Type III or Type IV retroreflective sheeting meeting requirements of Article 4186.03.

On projects where two new lanes are being constructed adjacent to an existing two lane highway, TWO WAY TRAFFIC (W6-3) signs shall be placed. The signs shall be placed off the right shoulder of mainline: 1) after each public side road for each direction of travel for traffic that may enter from all intersecting side roads; or 2) at 1/2 mile (0.8 km) intervals, whichever is less. These signs shall be installed when grading activities start and shall remain in place until the entire four lane divided highway is opened to traffic. If the pavement is constructed under a separate contract, these signs shall remain in place after the grading contract is completed and become the property of the Contracting Authority. The paving contractor shall then take over these signs and remove them when the four lane divided highway is opened to traffic. Payment will be in accordance with Article 2528.13, A, 1.

Permanent signing that conveys a message contrary to the message of the temporary signing and not applicable to the working conditions shall be covered or removed by the Contractor when directed by the Engineer.

The END ROAD WORK (G20-2) sign may be eliminated for mobile or short duration (less than 1 hour) temporary traffic control zones.

2528.03 CHANNELIZING DEVICES.
Channelizing Devices shall be of the type shown in the contract documents and shall utilize reflective sheeting meeting the requirements of Article 4186.03.

Channelizing devices may be placed up to 2 feet (0.6 m) beyond centerline or land line at specific locations where actual work activity is taking place. Channelizing devices shall be returned to the original position when the work activity has passed.

Individual channelizing devices may be omitted during working hours in areas where placement interferes with the work. Channelizing devices on tapers are required at all times.

Channelizing devices of different types shall not be intermixed.

A. Barricades.
When Type I or Type II Barricades are furnished as one of the options for channelizing devices in lieu of vertical panels, 42 inch (1050 mm) channelizers, cones, or drums, a 2 foot (0.6 m) minimum length barricade may be used.

Type III barricades shall have a minimum length of rail of 6 feet (1.8 m). When traffic is permitted in each direction around a Type III Barricade, the Type III Barricade used shall have fully reflectorized faces on both sides of the rails.

Barricades shall be erected in essentially a horizontal position perpendicular to the direction of approaching traffic. They shall be ballasted so as not to cover any striped rail.

B. Cones, Vertical Panels, 42 Inch (1050 mm) Channelizers, Drums, and Tubular Markers.
Cones, vertical panels, 42 inch (1050 mm) channelizers, drums, and tubular markers shall meet the current requirements of the MUTCD, and Section 4188.

When used to separate two way traffic, temporary no passing lines shall be separated by approximately 16 inches (400 mm), with the marker to be installed between these lines.

Tubular markers shall be between 28 inches (710 mm) and 34 inches (865 mm) in height with a diameter facing traffic at least 2 inches (50 mm) in width. Tubular markers shall be completely faced with reflectorized white and orange sheeting. The white reflectorized sheeting shall be in two bands 4 inches (100 m) wide with 6 inches (150 mm) between bands. The top band shall be no more than 2 inches (50 mm) from the top of the tubular marker.

Cones may be used as channelizing devices in tapers and along lane lines during daylight hours only.

2528.04 PILOT CARS.
Pilot cars shall be pickup trucks or automobiles displaying the Contractor's company insignia, equipped with G20-4 signs reading: PILOT CAR - FOLLOW ME. Two signs shall be mounted on the vehicle so as to be clearly visible from both directions of traffic. The bottom of the signs shall be mounted at least 1 foot (0.3 m) above the top of the vehicle's roof.

Pilot cars shall be operated such that they maintain a uniform speed through the work area, no greater than 40 miles per hour (65 km/hr).

2528.05 TEMPORARY BARRIER RAIL.
Temporary barrier rail shall be as shown in the contract documents. Unless otherwise shown, they shall be precast concrete units. The units shall be tied together as specified or as approved by the Engineer.

2528.06 LIGHTING DEVICES.
Lighting devices shall be furnished as required by the contract documents. Type A barricade warning lights will normally be required for nighttime installations. Type B warning lights will normally be required for 24 hour operation.

All barricade warning lights shall be in accordance with the ITE Standard for Flashing and Steady Burn Barricade Warning Lights and shall be identified as specified therein. In addition, Type A barricade warning lights shall operate on a 12 volt battery system, unless the ITE identification specifically indicates that the rating is based on a different system. Type A lights shall be visible to both directions of traffic.

When arrow displays are used, they shall be Type C arrow displays described in the current edition of the MUTCD, Part VI, and they shall be operated in a sequential chevron mode when indicating a lane change.

2528.07 TEMPORARY TRAFFIC SIGNALS.

A. General.
Temporary traffic signals shall be set up and operated as shown in the contract documents. The temporary traffic signal system shall meet the physical display and operational requirements of conventional traffic signals as specified in Part 4 of the MUTCD. Unless otherwise stated in the contract documents, the Contractor may provide either a span wire or trailer mounted temporary traffic signal system.

In the event any part of the temporary traffic signal system malfunctions or a continuous red flash mode is encountered, flaggers shall be furnished by the Contractor on a 24 hour-7 day a week basis until repairs are made and the signals are fully functional. For temporary traffic signals at intersections, the Contractor shall install stop signs on all approaches until the signals are fully operational. This shall be at no additional cost to the Contracting Authority.

B. Equipment.

1. Trailer Or Span Wire Mounted Systems.
The Contractor shall furnish actuated signal controllers complying with NEMA and ITE standards. The temporary traffic signal system shall include a solid state digital traffic signal controller capable of operating the signals in accordance with MUTCD requirements and NEMA Standard TS1 (a copy of the manufacturer’s certificate of compliance shall be posted in the control cabinet (in a weatherproof folder) and made available to the Engineer upon request). Temporary traffic signal systems shall have conflict monitoring conforming to NEMA TS1 standard. The conflict monitor shall detect the presence of conflicting signal indications, absence of proper voltages, and proper operation of the controller. Upon detection of a conflict or loss of communication, all signals shall enter into flashing red mode.

Article 2525.03, D shall apply with the following exceptions for one lane two way traffic control:

a. Green Revert.
If during an All Red clearance interval a call occurs on the phase losing the right-of-way prior to a call on any other traffic phase, the right-of-way shall revert to the previous traffic phase, initiating the initial green interval. The transfer shall be immediate without completing the All Red clearance interval.

b. Rest in Absence of Actuation.
In the absence of detector actuation of assertion or recall switch(es), the right-of-way indication shall Dwell In All Red.

Clearance for overhead wiring shall be a minimum of 18 feet (5.5 m).

A detection area shall be located near the stop line with the downstream edge positioned 6 feet (2 m) from the stop line. A second detection area shall be located 100 to 150 feet (30 to 45 m) in advance of the stop line. The size of the detection area shall be 6 feet by 10 feet (2 m by 3 m). A single above- ground detector may be used to provide detection for both areas.

Signal heads shall have 12 inch (300 mm) lenses and conform to ITE Specification “Vehicle Traffic Control Signal Heads”. All signal heads shall be equipped with visors and back plates. The backplate shall provide a minimum of 5 inches (125 mm) black field around the signal assembly and shall have a dull black finish.

There shall be a minimum of two traffic signal heads per approach. All signal heads mounted over the road surface shall be mounted a minimum of 15 feet (4.6 m) from the bottom of the signal head to the top of the road surface. One signal head shall be mounted over the center of the travel lane. All far right signal heads shall be mounted a minimum of 8 feet (2.45 m) from the bottom of the signal head to the top of the ground surface. Required signal heads for through traffic on any one approach shall be located not less than 8 feet (2.4 m) apart measured horizontally perpendicular to the approach between the centers of the signal faces.

2. Trailer Mounted Systems.
The system shall consist of two or more self-contained trailer mounted units each containing two signal heads.

3. Span-Wire Mounted Systems.
Posts shall meet requirements of Article 2528.02.

C. Operational Requirements.
The exact location of the signals, stop bars, and signs shall be as identified in the contract documents. Temporary traffic signal installations shall be set up securely and leveled in a manner approved by the Engineer.

All temporary traffic signals shall be programmed for red flash upon startup, conflict, or power failure. The temporary traffic signal system shall be programmed to dwell in all-red.

For one lane two way traffic control operations, when an additional phase is used for a side road movement, only one long all red interval shall be used between active phases on each side of the work area.

Signal timing shall be set as identified in the contract documents.

D. Equipment Crossings.
For equipment crossings, a signal operator shall be used to control the signal system. This operator shall be positioned with good sight distance for both the mainline and haul road.

The signal system shall be preprogrammed with fixed yellow and all red time periods so the operator can only activate the beginning of the yellow interval for mainline traffic.

When the equipment crossing is not in use, the signal shall be set to yellow flash mode. If hauling operations are suspended for more than one week, the signal heads shall be covered, or if portable trailer units are used, the trailers shall be removed.

2528.08 TEMPORARY FLOODLIGHTING.
Floodlighting shall be installed and in service before work is started that requires nighttime traffic control by the traffic control plan.

Luminaires used for floodlighting shall be standard roadway types with totally enclosed refractors. The Illuminating Engineering Society (IES) glare control rating shall be "cut off". The lamps shall have an initial output rating of 19,000 lumens or greater, for operation in such luminaires. All luminaires shall be approved by the Engineer.

Temporary floodlighting shall consist of either a pole-mounted luminaire or a luminaire mounted on portable equipment. The mounting height of luminaires shall be not less than 35 feet (11 m) above the roadway, and as shown in the contract documents. The Contractor shall determine pole length by field measurement to obtain specified mounting height. Poles shall be placed outside the normal shoulder line at the approximate locations shown in the contract documents.

Clearance for overhead wiring shall be a minimum of 18 feet (5.5 m). Auxiliary poles used to furnish power to floodlighting shall be offset 30 feet (9 m) from the traveled way unless there are right-of-way restrictions.

Above ground lighting circuits shall be aluminum or A.C.S.R. triplex. Underground lighting circuits shall be type U.S.E. or U.F. All luminaires shall be photoelectric controlled for dusk to dawn operation.

The Contractor shall exercise reasonable care to avoid interruptions during the hours of darkness, shall repair promptly any damage to the system, and shall replace all burned out lamps as soon as possible.

2528.09 TEMPORARY CRASH CUSHIONS.
Section 2509 shall apply.

2528.10 FLAGGERS.
The flaggers shall be trained about safe flagging operations that comply with Iowa DOT Flaggers Handbook, Part VI of the MUTCD, and the Standard Specifications prior to flagging operations. Training of flaggers shall include the following:

1. Issue and review the current Iowa DOT Flaggers Handbook,
2. Presentation of the current Iowa Professional Flagging Video,
3. Issue flagger training card, which shall include the following:

The flaggers shall carry their flagger training card at all times and show it upon request.

4. Contractor shall maintain a list of the flaggers trained and the date of the training.

Training shall not be required for short time, emergency, or relief assignment of employees to flagging operations. Payment will not be made in accordance with Article 2528.12, A, 7.

Flagger operations, equipment, and apparel shall confirm to the Iowa DOT Flagger's Handbook.

When nighttime flagging is required, auxiliary lighting shall be provided to illuminate the flagging stations according to the current Iowa DOT Flagger's Handbook. This lighting shall be set up in such a manner to minimize glare to motorists. The cost of furnishing nighttime flagging stations shall be included in the lump sum price bid for Traffic Control.

2528.11 LIMITATIONS.
All traffic control devices subject to movement by wind shall be anchored by sandbags.

When a two way road is open to public traffic during contract work, one way traffic shall not be controlled through the work area by means of a carry through flag or other token, except during equipment failure or emergency. When voice or signal communication between flaggers at control points is difficult or not effective because of distance, sight, or noise, other means shall be used. These may be two way radio, pilot cars, or traffic signals. When the normal work area exceeds 1/4 mile (0.4 km) on Primary projects, pilot cars shall be used; however, where necessary for short durations, the distance may be extended to 1/2 mile (0.8 km) for better sight distance or to clear intersections or other safety considerations with approval of the Engineer, provided a two way radio is used for communication between flaggers.

During non-working hours, traffic control devices intended for working hours only shall be removed, covered, or turned down unless a drop-off or physical obstruction remains within 15 feet (4.5 m) of a lane open to traffic. Signs or barricades are not required for work beyond 15 feet (4.5 m) of a lane open to traffic. When traffic control devices are no longer needed, they shall be removed.

At night, workers shall wear ANSI 107 Class 2 apparel if they are within 15 feet (4.6 m) of an open lane of traffic, unless they are shielded by temporary barrier rail or inside a vehicle cab. After November 24, 2008, aAll personnel in the highway right-of-way shall wear ANSI 107 Class 2 apparel at all times when exposed to traffic or construction equipment.

The Engineer may require traffic control devices to be recleaned by washing. The device shall be washed with a brush and water, and with detergent or solvent as necessary. Washing shall include a supplemental or auxiliary sign, if any, the entire target area or sign face, all reflectors, and faces of warning lights which are part of that device.

Entry to and exit from work areas shall be in the direction of public traffic and shall not cross open traffic lanes at other than designated locations. During hours of darkness, the Contractor shall operate equipment in the traffic control zone facing in the direction of traffic flow unless otherwise specified in the Traffic Control Plan. Darkness will include the period from sunset to sunrise and other times when conditions such as fog, snow, sleet or rain provide insufficient lighting to clearly identify persons and vehicles on the highway at a distance of 500 feet (150 m) ahead.

Unless otherwise stated in the traffic control plan, the Contractor shall provide for a minimum of 2 miles (3 km) between traffic control zones on rural roadways. Minimum distances between traffic control zones on urban roadways shall be at the direction of the Engineer.

Modifications to the Traffic Control Plan shall be reviewed and approved by the Engineer prior to any changes being made. Sign spacing may be modified by the Engineer to meet existing field conditions or to prevent obstruction of the motorist's view of permanent signing.

2528.12 METHOD OF MEASUREMENT.

A. When the contract documents include an item for traffic control, the Engineer will measure for payment the following items:

1. Traffic Control.
This item will be the lump sum for traffic control for the project in addition to the following items.

2. Temporary Barrier Rail.
The Engineer will calculate the length of temporary barrier rail used based on count and the nominal length of each unit. The length of temporary barrier rail measured will be the length required per setup. Measurement will also be made for temporary barrier rail moved within, or added to, an existing setup when required by the contract documents. Measurement of temporary barrier rail, after its initial placement, will not be made unless it is required by the contract documents to be moved.

3. Temporary Crash Cushions.
Article 2509.04 shall apply.

4. Temporary Traffic Signals.
The Engineer will count each group installation of temporary traffic signals operated by a common control unit. A group installation is normally four signal heads at the same traffic conflict area.

5. Temporary Floodlighting.
The Engineer will count each Temporary Floodlighting Luminaire installed.

6. Pilot Cars.
The Engineer will count the number of days each pilot car was used.

For a pilot car to be counted:

a. The pilot car shall be needed and used as part of preplanned work that is started that day and is intended to proceed for a major part of the day. If used less than 4 hours in a calendar day, the operation will be counted as a half-day. If a pilot car is used for more than 16 hours in a calendar day, the pilot car will be counted as 2 days.

b. Other pilot cars shall be needed and used for at least 1 hour during the day, perhaps intermittently, and this shall be the primary duty of the employee. If used less than 4 hours in a calendar day, the pilot car will be counted as a half-day.

Short time, emergency, or relief assignment of employees to pilot car operations will not be counted separately.

7. Flaggers.
The Engineer will count the number of days each flagger was used.

For flaggers to be counted:

a. The flaggers shall be needed and used as part of preplanned work that is started that day and is intended to proceed for a major part of the day. If used less than 4 hours in a calendar day, the flagger will be counted as a half-day.

b. Other flaggers shall be needed and used for at least 1 hour during the day, perhaps intermittently, and this shall be the primary duty of the employee. If used less than 4 hours in a calendar day, the flagger will be counted as a half-day. If a flagger is used for more than 16 hours in a calendar day, the flagger will be counted as 2 days.

Short time, emergency, or relief assignment of employees to flagging operations will not be counted separately.

8. Monitoring With Incident Response.
Monitoring with Incident Response will be measured in calendar days based on the contract quantity.

Additional Incident Response Personnel required by the Engineer to provide CMS operation will be measured in calendar days per person needed.

B. When traffic control is incidental to other items on the project, and the following items are required, these will be items in the contract documents with measurement as follows:

1. Traffic Control.
No separate measurement will be made.

2. Temporary Barrier Rail.
Article 2528.12, A, 2, shall apply.

3. Temporary Crash Cushions.
Article 2509.04 shall apply.

4. Temporary Traffic Signals.
Article 2528.12, A, 4, shall apply.

5. Temporary Floodlighting.
Article 2528.12, A, 5, shall apply.

6. Pilot Cars.
Article 2528.12, A, 6, shall apply.

7. Flaggers.
Article 2528.12, A, 7, shall apply.

2528.13 BASIS OF PAYMENT.

A. When the following items are required for traffic control, there will be items included in the contract documents with payment as follows:

1. Traffic Control.
When there is a contract item for Traffic Control, the Contractor will be paid the lump sum contract price. This payment shall be full compensation for erecting, maintaining, moving, and removing all traffic control devices required by the contract documents, including warning lights, and for furnishing all materials, labor, and equipment. This payment shall also be full compensation for traffic quality control.

2. Temporary Barrier Rail.
For the number of linear feet (meters) of temporary barrier rail measured, the Contractor will be paid the contract unit price per linear foot (meter).

Maintenance and repair of temporary barrier rail shall be incidental to Temporary Barrier Rail.

3. Temporary Crash Cushions.
Article 2509.05, A, shall apply.

4. Temporary Traffic Signals.
The Contractor will be paid the contract unit price for each group installation operated by a common control unit, normally four signal heads at the same traffic control area. This payment shall be full compensation for the controller, signal heads, traffic detection system, and signal operator.

5. Temporary Floodlighting.
The Contractor will be paid the contract unit price for each Temporary Floodlighting Luminaire installed. This payment shall be full compensation for furnishing, installing, maintaining and servicing the temporary floodlighting units, all costs for electrical energy, and the cost of removing all lighting materials from the construction site.

6. Pilot Cars.
For the number of days each pilot car was operated, the Contractor will be paid the predetermined contract unit price per day.

7. Flaggers
For the number of days each flagger was used, the Contractor will be paid the predetermined contract unit price per day. This payment will be full compensation for providing trained flaggers in accordance with Article 2528.10.

8. Monitoring With Incident Response.
For the number of calendar days that Monitoring With Incident Response is used, the Contractor will be paid the contract unit price per calendar day. This payment shall be full compensation for furnishing the necessary vehicle (including operation, maintenance, and supplies); furnishing the operator; documentation of any events that restrict the normal flow of traffic including responses to an emergency situation; re-erecting, repairing, or replacing traffic control devices; providing assistance to persons with vehicle problems; moving stalled vehicles; and summoning further assistance when needed.

For the number of calendar days that Additional Incident Response Personnel, such as for CMS operation required by the Engineer, are used, the Contractor will be paid the contract unit price per person per calendar day. This payment shall be full compensation for furnishing the required personnel and necessary support vehicles.

B. When traffic control and traffic quality control are incidental to other items on the project, and the following items are required, they will be included in the contract documents with payment as follows:

1. Traffic Control.
No separate payment will be made.

2. Temporary Barrier Rail.
Article 2528.13, A, 2, shall apply.

3. Temporary Crash Cushions.
Article 2509.05, A, shall apply.

4. Temporary Traffic Signals.
Article 2528.13, A, 4, shall apply.

5. Temporary Floodlighting.
Article 2528.13, A, 5, shall apply.

6. Pilot Cars.
Article 2528.13, A, 6, shall apply.

7. Flaggers.
Article 2528.13, A, 7, shall apply.

When the Engineer requires recleaning of reflectorized surfaces of traffic control devices, payment will be made as extra work in accordance with Article 1109.03, B.

All traffic control devices furnished by the Contractor shall remain the Contractor's property at the completion of the work and shall be removed from the site when no longer needed.