B
HomeLibrariesCopilotSearchProjectsBookmarks
FeedbackHelp Desk
Libraries
Building Codes
Code LibraryIBC — BuildingIRC — ResidentialIFC — FireIPC — PlumbingIMC — MechanicalIFGC — Fuel GasIECC — EnergyNEC — ElectricalModel Codes
Specifications
CSI SpecificationsDOT SpecsTransit SpecsUSACE
Standards
TransportationRailroadFire SafetyAccessibilityStructural
Tools & References
DiagramsAssembliesProductsCalculatorsChecklistsPermits
PricingLog in
ITS Devices (1200+)

1236MAINTENANCE, CHANGEABLE MESSAGE SIGNS (CMS)

PA · 2026 Standard SpecificationsBook pages 14041408View official source ↗

1226 .1 1226 .4(b) SUBSYSTEM

1226.1DESCRIPTION —This work is to furnish, install, modify, repair, replace, and remove components

of a Highway Advisory Radio (HAR) subsystem .

1226.2MATERIAL —Section 12 20.2

1226.3CONSTRUCTION —Section 12 20.3 and as follows:

(a)Preventive Maintenance .
1.General . Section 1206.3(a)1
2.Site. Section 1206.3(a)2
3.Enclosures . Section 1206.3(a)3
4.Transmitters . Inspect for wear, rust, cracks, missing, damaged or bent parts, loose connections,

frayed cables, damage caused by lightning, leaning, car impacts, or vandalism, and general condition. Check batteries. Clean, repaint , and repair as necessary. Verify the broadcast signal strength of the HAR transmitter via the dials located on the front panel. Verify that the HAR transmitter is clearly transmitting a signal by utilizing a car radio and turning the dial to the appropriate channel. Test communication system, including pager systems. Test power and communications line surge suppressors and replace as necessary. Test all static signing flashing warning devices associated with the HAR systems, check batteries, clean controller enclosure and solar panels that power the battery packs.

5.Flashing Warning Beacons . Verify the operation and inspect , clean , and repair the components

of the system including, but not limited to : flashing LED yellow lights, supports, signage legend, aluminum sheet , foundation, connections, field enclosure , dual circuit flasher controller, modems, communications, programming, services, conduit, junction boxes, wiring, sign luminaries, solar panels , and battery back -up if applicable along with any other related system equipment.

(b)On-call Maintenance .
1.General . Section 1206.3(b)1

After On-call Maintenance (OM) has been completed, perform Preventive Maintenance (PM) as described in Section 12 26.3(a).

2.Responsiveness . Section 1206.3(b)2

1226.4MEASUREMENT AND PAYMENT —

(a)Preventive Maintenance , HAR Subsystem Transmitter . Each

All labor, materials, and equipment required for routine preventive maintenance are incidental to this item including, but not limited to , the Statewide Device Identification Number, cleaning materials, caulk, metal meshing, lubricants, filters, lamps, paint, surge suppressors, fuses, circuit breakers, attachment hardware, insect prevention measures, rodent control measures, clearing and grubbing, selective tree trimming, snow and ice removal, and weed control measures. Mobilization is incidental to this item.

(b)Preventive Maintenance , HAR Subsystem Beacon . Each

1226 .4(b) 1226.4(i)

Source: Pennsylvania Department of Transportation Specifications, 2026 Edition. Pages 14041408 of 1,522.