A series of field evaluations were performed to assess the speed reduction effects of a speed feedback trailer (SFT) positioned at various locations before and after a median crossover section within … [Read more...] about Evaluating Driver Response to a Speed Feedback Trailer at Median Crossovers Within Freeway Construction Work Zones
Traffic Control Devices
Impact of Road Sign on Traffic Congestion During Road Repair: A Cellular Automaton Model Study
This study investigates the impact of road signs on traffic congestion during road repairs using a cellular automaton (CA) model. The model simulates an urban dual-lane one-way road, incorporating a … [Read more...] about Impact of Road Sign on Traffic Congestion During Road Repair: A Cellular Automaton Model Study
MASH Allowable Flare Rates for Portable Single-Slope Concrete Barriers
Portable concrete barriers (PCBs) are commonly used to provide positive protection in work zones. They also shield work-zone personnel from errant motorists when activities are being performed near … [Read more...] about MASH Allowable Flare Rates for Portable Single-Slope Concrete Barriers
Arrow Boards
Portable Traffic Signal Lights
CDOT Is Piloting Autonomous Truck-Mounted Attenuators to Enhance Safety for Road Crews
The Colorado Department of Transportation (CDOT) is piloting autonomous truck-mounted attenuators (ATMAs) to improve work zone safety for road crews. These self-driving crash cushion trucks follow … [Read more...] about CDOT Is Piloting Autonomous Truck-Mounted Attenuators to Enhance Safety for Road Crews