958TEMPORARY TRAFFIC CONTROL SIGNALS

958.1DESCRIPTION—For new temporary traffic signals, t his work is the furnishing and installation of

complete and operational temporary traffic control signal systems for stationary operations ; work includes installing, maintaining, relocating, resetting, and removing these temporary traffic control signals. For existing permanent traffic signals, this work is the temporary modification and restoration of existing permanent traffic signals to address congestion resulting from traffic volume shifts due to construction- related traffic or to accommodate temporary modifications to roadway geometry.

958.2MATERIAL—

• Traffic Signal-General. Section 950.2

• Compliance Certification of Bulletin Material. Section 106.03(b)3

• Conform to Publication 213 and MUTCD Part 4.

all items required to provide a temporary signal system as indicated. Conform to Publication 213, field conditions, and as indicated for long-term stationary operations using temporary fixed support systems. Do not use temporary fixed support signals for short-term, stationary operations. For short-term, stationary operations, use requirements as specified in Sections 958.2(c) and (d).

• Provide signs and devices according to Publications 149, 213, and 236, as indicated, and as required based on actual site conditions and as directed.

• Provide a controller with minimum 3-cycle operation, auto-manual switch and a manual control button with flexible cord.

• Provide signal poles of wood, galvanized steel, or painted steel. Steel poles may be provided instead of wood poles at no additional cost to the Department to eliminate encroachments on adjacent properties.

• Provide certification that the signal poles are designed to withstand the anticipated loading.

• Provide guy wires as indicated.

signal system as indicated, and as follows:

Conform to Publication 213, field conditions , and as indicated for short -term stationary operations using pedestal-mounted signals. Do not use pedestal-mounted portable signals for long-term, stationary operations. In addition to work areas, pedestal-mounted portable signals may also be authorized for use by the Department on special events and applications conforming to the requirements in Publication 213, and as indicated. Manufacturers must advise users of their systems of these Department requirements and procedures.

2.a. Structural Adequacy. Provide a structurally adequate unit to support all pedestal -mounted equipment. Furnish units with adequate structural integrity to enable lifting and placing them as required.

2.b. Stability. Provide units with acceptable stability and a suitable means for ballasting.

2.c. Assembly Mechanisms. Equip each unit with tires and retractable handles to facilitate deployment, relocation, and removal. Mount signal heads on a retractable vertical upright equipped with a manual hand crank.

2.d. Labels. Mark the manufacturer, serial number, and emergency phone number permanently on each using a decal, metal plate, or other method approved by the Representative.

3.a. Number and Location. Furnish each pedestal-mounted portable traffic control signal system consisting of a minimum of two pedestal-mounted signal head units for each approach or as indicated.

3.b. Vertical Clearance. Mount the bottom of the housing of a signal at least 8 feet but not more than 15 feet above the sidewalk. If there is no sidewalk, measure the mounting height above the pavement grade at the center of the roadway.

3.c. Size and Orientation. Mount each signal head vertically with indications 12 inches in diameter.

3.d. Signal Head Design. Furnish yellow signal head housings as specified in Section 955.2(b)1. Provide signal heads with visors having a minimum depth of 9- 1/2 inches. Equip all signal heads with backplates as specified in Section 955.2(b)3.

3.e. Approved Material Types. Furnish all signal heads with LED modules. Provide all LED modules and signal housings as specified in Section 955.2(c).

3.f. Supplemental Signal Indicator Lamps. Provide lamps on the back side of each unit for a visual status of the signal indications. The lamp should display red to indicate oncoming traffic is provided with a green indication and the indication should remain off if oncoming traffic is provided with a red indication.

over an ambient temperature range of -30F to 165F, and a relative humidity range of 0% to 95%.

supply with sufficient capacity to power each unit for 7 days at 72F without charging. Equip each unit with batteries and a battery charger for use with a 110 V power source. Furnish a visual display of the battery charge status. Enclose the batteries and battery charger in a lockable, weatherproof compartment. Key all locks alike

for each unit in a system. Provide a system capable of running via existing commercial power. Equip unit with a generator connector for power loss conditions.

wireless radio link or overhead hardwire to ensure fail -safe operation and proper functioning. Interconnect the units to function as a master/slave system. Ensure radio communications conform to applicable FCC requirement.

7.a. Required Modes. Provide each system to operate via manually controlled, fixed-time, traffic- actuated, and flashing modes.

7.b. Manually Controlled Operation. Furnish manual control with wireless remote. Provide a manual control mode prohibiting the operator to interrupt any preprogrammed all -red and/or all -yellow clearance time in a manner that would create a conflict.

7.c. Fixed-Time Operation. Provide a system capable of accommodating a minimum of five timing patterns per 24-hour period.

7.d. Traffic-Actuated Operation. Use detection systems as specified in Section 956.2(c).

7.e. Flashing Operation. Provide a system capable of both flashing red and flashing yellow operations in programmed flash and cabinet flash modes.

7.f. Emergency Preemption. As an option, provide a system, as specified in Section 956.2(e), capable of accommodating an optical, radio, or sound-based preemption system to provide a green indication for a properly equipped, approaching emergency vehicle.

7.g. Railroad Preemption. Because of the complexity and variation involved with railroad crossings, this operation will require a district special provision.

8.a. Programmable Timing Patterns. Allow users of the system to program coordinated signal timings for green periods and cycle lengths to the nearest 1 second, over a range of values from 3 seconds to 250 seconds. Phase timings, including minimum green, green extension, yellow clearance, and red clearance must be programmable to the nearest 1 second. Minimum green times must be programmable over a range of 0 seconds to 25 seconds. Green extension times must be programmable over a range of 0 seconds to 10 seconds. Maximum green times must be programmable for each phase to the nearest second and must be programmable over a range of 3 seconds to 250 seconds.

8.b. Minimum Number of Phases. Furnish system capable of a minimum of six -phase traffic signal operations.

8.c. Manual Programming. Allow users of the system the ability to program pre- selected timing patterns.

8.d. Timing Algorithms. If the system has software to automatically determine timing patterns based on certain input data, submit a complete description from the manufacturer of the logic behind the timing algorithm for the Representative’s review and approval.

signal indications according to the conflict monitoring provisions of the NEMA Standards. If a conflicting display is detected, provide a system causing a transfer of the signals to flashing red.

users of the portable traffic control signal system. Submit technical documentation to the Representative that describes all necessary information regarding system operations, service procedures, and parts. Submit training documentation to the Representative showing that the trained personnel are knowledgeable of the signal system’s operation and function.

signal system as indicated, and as follows: Conform to Publication 213, field conditions, and as indicated for short-term stationary operations using trailer-mounted portable signals. Conform to Publication 213, field conditions, and as indicated for long-term, stationary operations using trailer-mounted portable signals. In addition to work areas, trailer -mounted portable signals may also be authorized for use by the Department on special events and applications that conform to the requirements in Publication 213, and as indicated. Manufacturers must advise users of their systems of these Department requirements and procedures.

2.a. General. Provide trailer capable of accommodating a vertical upright and a horizontal mast arm.

2.b. Structural Adequacy. Provide trailer with welded steel construction and with structural adequacy to support all trailer -mounted equipment, and adequate structural integrity to enable lifting and placing vertical upright and horizontal mast arm as required.

2.c. Stabilizers. Equip trailer with at least four leveling jacks, pads, or feet, one at each comer of the trailer, for maintaining the trailer in a level, stabilized position and capable of locking in position.

2.d. Licensing. Equip trailer with all required lighting and other features to legally transport on the public highway system. Provide trailer and all its components with sufficient strength and rating to operate safely upon the public highway system at legal speeds without bending, cracking, bottoming, premature wear, or other damage.

2.e. Lifting and Assembly Mechanisms. Provide all lifting and other assembly mechanisms for simplicity and quick operation to keep set up and take down time to a minimum and to enable operation by one person. Equip lifting mechanism with a locking device to secure the assembly in a raised position; with a horizontal, lowered position for transport; and with a raised, vertical position, facing rearwards from the trailer, for operation.

2.f. Vandal-Resistant Features. Furnish trailer and its components to help ensure continued proper placement and to forestall vandalism. Provide trailer with adequate vandal-proof housings for all equipment. Provide removable trailer tires and hitch. Provide lockable battery enclosures, crank mechanisms for horizontal arms, and other mechanisms for adjusting placement or operation to eliminate tampering by unauthorized personnel. Key all lockable items alike. Equip the trailer drawbar with a swing-away, screw-type jack.

2.g. Reflective Markings. Place reflective tape or reflectors at each corner on the front, rear, and sides of the trailer.

2.h. Labels. Mark the manufacturer, serial number, and emergency phone number permanently on each trailer using a decal, metal plate, or other method approved by the Representative.

3.a. Number and Location. Furnish each trailer with a minimum of two signal heads or as indicated. Mount at least one signal head overhead on the mast arm, except as indicated where two overhead signal heads are required on the mast arm. Provide horizontal mast arm capable of extending a minimum distance of 9 feet from the edge of the trailer. Locate signal faces apart a minimum horizontal distance of 8 feet

measured between centers of signal faces along a line perpendicular to the centerline of the approach.

3.b. Vertical Clearance. Suspend the bottom of the housing of a signal face over the roadway a minimum of 15 feet, but not more than 19 feet, above the pavement. Mount the bottom of the housing of a signal face not over the roadway at least 8 feet, but not more than 15 feet, above the sidewalk. If there is no sidewalk, measure the mounting height above the pavement grade at the center of the roadway.

3.c. Size and Orientation. Mount each signal head vertically with indications 12 inches in diameter and capable of rotating 180 degrees horizontally. Provide reversible mountings to allow for placing a trailer on both sides of the roadway.

3.d. Signal Head Design. Section 958.2(c)3.d.

3.e. Approved Material Types. Section 958.2(c)3.e.

3.f. Supplemental Signal Indicator Lamps. Section 958.2(c)3.f.

to fit onto the portable trailer -mounted unit. The function of the Work Zone Luminaire is to illuminate the portable trailer signal and surrounding work area during periods of low visibility. Photocell sensors will automatically activate the light at dusk. The luminaire will be comprised of LEDs for it s light source and powered by the portable trailer unit’s battery system.

952.2, 954.2, and as follows: Provide materials as required to complete the timing adjustment work.

953.2, 954.2, 955.2, 956.2, 957.2, and as follows: Provide materials as required to complete the signal modification work.

Signal as indicated, and as follows: The use of the Residential Driveway Temporary Signal is limited to residential driveways within the one-lane, one-direction portion of a temporary traffic control zone resulting from closing one lane on a two- lane, two-way roadway. The driveway approach may be provided with only one signal face. A steady yellow change interval must follow the flashing yellow arrow interval for the Residential Driveway Temporary Signal.

2.a General. The Residential Driveway Temporary Signal is a self -contained mobile unit with a small footprint. This includes a single vertical mast that supports a single signal head. The body of the unit can be a trailer to be moved by a vehicle or a cart designed to be moved by an individual.

2.b Structural Adequacy. Provide trailer with welded steel construction and with structural adequacy to support all trailer-mounted equipment.

2.c Stabilizers. Section 958.2(d)2.c.

2.d. Licensing. Section 958.2(d)2.d.

2.e. Lifting and Assembly Mechanisms. Provide all lifting and other assembly mechanisms for simplicity and quick operation to keep set up and take down time to a minimum and to enable operation by one person. Equip any lifting mechanisms with a locking device to secure the assembly in a raised position.

2f. Vandal-Resistant Features. Section 958.2(d)2.f.

2.g. Reflective Markings. Section 958.2(d)2.g.

2.h. Labels Section 958.2(d)2.h.

3.a. General. The Residential Driveway Temporary Signal must consist of a three- section signal face in an inverted “T” configuration comprising a 12- inch steady circular red signal indication on top and two adjacent 8-inch or 12-inch flashing yellow arrow indications below. Include a NO TURN ON RED sign (R10-11b) with a regulatory plaque displaying the legend TURN ONLY IN DIRECTION OF ARROW. The Residential Driveway Temporary Signal must be used only for residential driveways and positioned on the near side of the residential driveway.

3.b. Signal Head Design. Furnish yellow signal head housings as specified in Section 955.2(b)1. Provide signal heads with visors having a minimum depth of 9-1/2 inches.

Coordinate t he Residential Driveway Temporary Signal with the Temporary Traffic Control Signal controlling the main roadway traffic. Program the system so that driveway vehicles can turn before, within, and after the main roadway traffic platoon. Adjust the all-red interval of the Temporary Traffic Control Signal to account for the addition of driveway vehicles to the platoon.

958.3CONSTRUCTION—

• According to Publication 213 for required operations, submit a completed Application for Permit to Operate Temporary Traffic Control Signals ( Form TE-952P) with an approved PennDOT Temporary

Traffic Control Signal Permit (Form TE-964P) being required before usage of these temporary signals.

• Install according to Publication 213, Part 4 of the MUTCD, and as indicated. Remove all items required to provide a temporary signal system as indicated.

• Own, operate, maintain, and repair all temporary traffic control signals, as indicated. Replace temporary traffic signals that cannot be repaired.

• All temporary signal equipment must be within public right of way. If guy wires cannot be located on public right of way, written permission from property owners is required.

• Initial flashing period is required for previously unsignalized locations, if temporary construction field conditions and situations allow, and as approved by a representative of the District Traffic Unit. Flash signals for a period of 3 days to 7 days before full operation. If approved, the duration of flashing operation may be 3 days to 5 days provided that it includes a minimum of 2 weekdays before beginning the normal stop- and-go mode of operation. Make initial turn- on to flashing mode in the presence of the Representative. Notify the District Traffic Unit, a minimum of 7 calendar days before the initial turn- on to flashing operations.

• Turn on signals to full operation of stop and go traffic between the hours of 9 AM and 2 PM, Tuesday through Thursday, except holidays, or the day before or after a holiday. Under special circumstances involving safety of motoring public, the Representativ e may grant exceptions to this rule. Make turn- on to full operations in the presence of the Representative. Notify the District Traffic Unit, a minimum of 7 calendar days before the initial turn-on to full operations, and each new construction phase.

• Perform all necessary timing adjustments. Timing adjustments and/or other approved plan modifications are incidental to the temporary traffic control signal work.

ͦ Submit any Contractor proposed signal timing changes to the Representative for approval before implementation. ͦ Make timing adjustments as approved and directed and update the Plans accordingly. ͦ Implement timing changes within 2 calendar days of Department notification.

• As field conditions allow and as approved by a representative of the District Traffic Unit, complete all required temporary traffic control features before the temporary traffic signal is turned on. This work includes but is not limited to pavement markings, signing and barrier.

• Emergency response for temporary signals.

ͦ Provide the Department and the local or state police providing enforc ement with the name and telephone number of an emergency contact person who is available 24 hours a day, 7 days a week. ͦ Provide immediate response to emergency calls from any representative of the Department, local police, state police, or municipality. ͦ The emergency contact person must be on site within 2 hours of notification and be knowledgeable in the operation and maintenance of the signal hardware.

• Repair surface areas disturbed by the installation of portable signals as directed and approved.

• When not in operation, hood the traffic signal heads with a material that covers the signal indications from the view of traffic or remove signal heads. All temporary traffic signal related signs must also be removed, covered, folded, or turned so that they are not readable by oncoming traffic when the portable traffic control signal is not in operation.

• Remove temporary traffic control signals after completion of construction phases/stages requiring them, as indicated. Removal is incidental to the temporary traffic control signal work.

• Document training or proficiency regarding the operation of the devices.

temporary fixed support signal system, including all required materials and work . Install temporary traffic control signals on fixed supports as specified in the following sections:

• Signs. Sections 931.3, 935.3, 936.3 and 1103.

• Pavement Markings. Section 961.3.

• Support Poles. Section 951.3, and as follows:

ͦ Install signal poles of wood, galvanized steel, or painted steel. Steel poles may be used instead of wood poles at no additional cost to eliminate encroachments on adjacent properties. ͦ Provide certification that the signal poles are designed to withstand the anticipated loading. ͦ Install the poles to provide transverse and vertical clearance as indicated and as shown on the Standard Drawings. ͦ Install tether wire for temporary signal installations that use wood or steel strain poles.

• Controller Assembly. Section 952.3.

• Traffic Signal Systems and Communications. Section 953.3.

• Electrical Distribution. Sections 910.3 and 954.3, and as follows:

ͦ Establish an electrical service agreement with the appropriate power company to furnish and install electrical service to the signal. ͦ Follow all power company procedures and specifications for obtaining the agreement and providing power to the system. ͦ Provide any additional materials required to provide electrical service.

• Signal Heads. Section 955.3.

• Detection. Section 956.3, or otherwise indicated.

• Traffic Signals-General. Section 950.3.

• System Testing. Section 950.3.

Install portable temporary traffic control signals on pedestal-mounted system according to the manufacturer’s recommendations, Publication 213, and as indicated.

Install portable temporary traffic control signals on trailer-mounted system according to the manufacturer’s recommendations, Publication 213, and as indicated.

determines that traffic congestion has worsened at signalized intersections along detour routes, or non- detour routes within close proximity to the construction project, the Department will direct the Contractor to implement temporary timing adjustments at specified, existing signalized intersections. This work involves timing adjustments only and does not include physical modifications to an existing permanent signal installation. For existing permanent signals that require physical modifications use the requirements as specified in Section 958.3(f). Provide a qualified signal technician to make the following timing adjustments to signalized intersections as directed. This work will be as specified in Sections 950.3, 952.3, 954.3, and as follows:

• Before making any changes, document the existing signal controller settings and verify that they are as indicated on the latest signal permit change. Notify the Inspector -in-Charge if unauthorized signal controller settings have been made.

• Perform signal controller changes , phasing, interval, timing, and coordination settings as provided or approved by the District Traffic Unit. Perform changes within 24 hours of Department notification. This work includes all necessary modifications to the controller cabinet, back panel, and/or cabinet wiring.

• For each affected controller cabinet, keep a record of the existing controller settings and a record of the temporary changes made to the controller cabinet. Keep a copy of the documentation in the project trailer and provide a copy to the District Traffic Unit.

• Upon removal of the detour, or elimination of non- detour route impacts, restore all traffic signals to their current, preconstruction Traffic Signal Permit Conditions, or as directed. Make all restorations in the presence of a representative of the District Traffic Unit.

to existing permanent traffic signals to accommodate geometric or operational changes during construction as required by the Traffic Control Plan. Provide a qualified signal technician to make the required changes to signalized intersections as indicated. This work will be as specified in Sections 950.3, 951.3, 952.3, 953.3, 954.3, 955.3, 956.3, 957.3, and as follows:

• Before making any initial changes, document the existing signal controller settings and verify that they are as indicated on the latest signal permit change. Notify the Inspector-in-Charge if unauthorized signal controller settings have been made.

• Add or modify signal equipment to provide configurations and operation as indicated. This work includes all necessary modifications to supports, signal controller/cabinet, signal heads, detection zones, signing, and timing/phasing, as indicated.

• Perform signal controller changes, phasing, interval, timing, and coordination settings as indicated or approved, by the District Traffic Unit. Perform changes within 24 hours of Department notification.

• Perform signal maintenance and repair responsibilities during construction as specified in 950.3(g).

• For each affected controller cabinet, keep a record of the existing controller settings and a record of the temporary changes made to the controller cabinet. Keep a copy of the documentation in the project trailer and provide a copy to the District Traffic Unit.

• Upon completion of all construction-related traffic signal impacts, restore all traffic signals to their current, preconstruction Traffic Signal Permit Conditions, or as directed. Make all restorations in the presence of a representative of the District Traffic Unit.

directed by the Representative and install the signal at the locations provided on the plans. Before installation, provide written notification to residents whose driveways will be controlled by a Residential Driveway Temporary Signal. This notification includes anticipated dates of operation and instructions to safely interact with the Residential Driveway Temporary Signal. The written notification must be according to Publication 478A for Limited English Proficiency Individuals. Locate the signal in view of the driveway to be controlled. Ensure the indications are clearly visible to approaching traffic. Avoid using temporary signals on non-motorized facilities, or directly within work areas, as means to control traffic. Extend the mast so that the signal head is positioned a minimum of 6-feet above the road surface unless otherwise directed by the Representative. Level signal head to provide maximum visibility for vehicles in the queue. Verify all signals are functioning properly before closing any lanes.

Ensure the Residential Driveway Temporary Signals operate continuously throughout the life of the project. This includes maintaining adequate power in accordance with the manufacturer’s recommendations. Ensure faults in the Residential Driveway Temporary Signal are corrected promptly which may necessitate replacing the unit. If the unit must be replaced because of an equipment defect, provide a replacement unit at no additional cost to the Department. Any informational signage needed in conjunction with the Residential Driveway Temporary Signal must be posted according to manufacturer’s recommendation and FHWA requirements. Cover the Residential Driveway Temporary Signal, or turn to face away from traffic, when not in use.

958.4MEASUREMENT AND PAYMENT—