Currently roadside workers have to keep their vehicles running to have the emergency lights on to alert drivers to their presence, which wastes fuel and emits pollution. The Arizona Department of … [Read more...] about Ariz. Department of Transportation Tests Solar-Powered Lights for Highway Maintenance Vehicles
Warning Lights
Barricade Lighting System
Presently in work zones, standard barricade warning lights are used to provide channelizing and warning functions. These yellow flashing lights are presently used without consideration of the specific … [Read more...] about Barricade Lighting System
Evaluation of Performance of Solar Powered Flashing Beacons at Severe Temperature Conditions
This report contains the results of 34 tests for JSF and 26 tests for Carmanah solar-powered flashing beacons operating in mild cold temperature (-6.6 ºC), severe cold temperature (-20 ºC), and hot … [Read more...] about Evaluation of Performance of Solar Powered Flashing Beacons at Severe Temperature Conditions
Dousing a Burn: Evidence Shows Steady Warning Light is Ineffective
Work zone channelization devices provide invaluable information to motorists on what to expect ahead. Even though the majority of construction work is done during the day, the work zone channelization … [Read more...] about Dousing a Burn: Evidence Shows Steady Warning Light is Ineffective
Evaluation of Steady-Burn Warning Lights on Channelizing Drums in Work Zones
This report documents the results of a study to evaluate the safety and mobility impacts associated with the elimination of steady burn warning lights on drums in construction work zones. National … [Read more...] about Evaluation of Steady-Burn Warning Lights on Channelizing Drums in Work Zones
Vehicle Warning Lighting Standard
Information contained in this Bulletin constitutes Department policy for vehicle warning lighting. Lighting devices specified are not to be interpreted as taking the place of any lighting devices … [Read more...] about Vehicle Warning Lighting Standard