For standard applications, Michigan DOT's typical lane line width is 4" lane lines, 6" edge lines. MDOT does not implement lane lines wider than the typical width.MDOT does not implement wider lane … [Read more...] about Lane lines in work zones
Michigan
Requirements for work or shadow vehicles to have Truck-Mounted Attenuator (TMA)
Michigan does not require the work vehicle to have a TMA. It does not require truck-mounted attenuators (TMAs) or a shadow vehicle to be used when setting up a lane closure. In its TMA guidelines, … [Read more...] about Requirements for work or shadow vehicles to have Truck-Mounted Attenuator (TMA)
Warning lights on channelizing devices
The following apply to all Michigan Department of Transportation (MDOT) projects: Type D warning lights are required on plastic drums. Two, Type C or Type D warning lights are required on Type … [Read more...] about Warning lights on channelizing devices
Pace vehicles or speed control vehicles to limit driver speeds through construction work zones
The only projects on which Michigan used pace/pilot vehicles have been preventative maintenance/chip seal and crush and shape projects, and only on two-lane two-way roadways. These projects are … [Read more...] about Pace vehicles or speed control vehicles to limit driver speeds through construction work zones
Top-mounted object markers for delineation of portable concrete barrier wall on highway projects or alternative devices
Michigan DOT's current practice is to delineate the temporary concrete barrier (TCB) with barrier markers placed at 6m max spacing at a height of 460 + 25mm from the bottom of the barrier marker to … [Read more...] about Top-mounted object markers for delineation of portable concrete barrier wall on highway projects or alternative devices
Lights allowed/required on drums; LED lights allowed
In Michigan, lights are required on drums for night work. LED lights are allowed. … [Read more...] about Lights allowed/required on drums; LED lights allowed