The safety of traffic operations in work zones has been a priority nationwide. This article describes the Texas Transportation Institute (TTI)'s involvement in three recent work zone research projects … [Read more...] about Work Zone Up Ahead: Other States Call TTI for Work Zone Research
Intrusion Alarms
Use of drone radar, safety intrusion alarms, CB Wizard, and automated flaggers in work zones
TxDOT has used drone radar in both rural and urban work zones, mostly in mobile operations. It was perceived to be somewhat effective as a speed control measure. Problem: It targets only road users … [Read more...] about Use of drone radar, safety intrusion alarms, CB Wizard, and automated flaggers in work zones
Use of drone radar and safety intrusion alarms in work zones
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
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