Caltrans has used radar speed trailers in work zones and has experimented with other drone-type speed advisory devices. The devices have been effective, especially on high-speed interstate freeways … [Read more...] about Use of drone radar and safety intrusion alarms in work zones
Warning Systems
Nevada:Use of safety intrusion alarms in work zones
Nevada DOT has used safety intrusion alarms in work zones. The type of safety intrusion alarm used is electrical. The system was effective at first, but construction vehicles began running through the … [Read more...] about Nevada:Use of safety intrusion alarms in work zones
Use of drone radar, safety intrusion alarms, and CB Wizard in work zones
16 units of drone radar were used statewide in Virginia. They were not perceived to be very effective as a speed control measure. A disadvantage was that project personnel had to keep them charged and … [Read more...] about Use of drone radar, safety intrusion alarms, and CB Wizard in work zones
Use of safety intrusion alarms in work zones
After testing two models of the work zone intrusion alarm, Vermont DOT's research unit purchased a model that uses an infrared beam sent from a transmitter unit to a receiver unit that also houses the … [Read more...] about Use of safety intrusion alarms in work zones
Use of safety intrusion alarms in work zones
New York DOT compared three models of intrusion alarm during a series of demonstrations and field evaluations across the state in the summer of 1994. Errant vehicles set off the intrusion alarms … [Read more...] about Use of safety intrusion alarms in work zones
Traffic management techniques (beyond the MUTCD) used to reduce accidents in work zones
Nevada uses the following: speed reductions prior to and through work zones, intrusion alarm systems, fluorescent orange sheeting for all construction signs for improved visibility, and night work … [Read more...] about Traffic management techniques (beyond the MUTCD) used to reduce accidents in work zones