Lane closures due to highway work zones present many challenges to the goal of ensuring smooth traffic operations and a safe environment for both drivers and workers. Late merge behavior at a work … [Read more...] about Safety Impacts of Signalized Lane Merge Control at Highway Work Zones
Traffic Signals
Safe Way to Go
As a critical part of highway construction and maintenance activities, flagging operations could benefit from the use of automated flagger-assistance devices (AFADs) to improve the safety of flagging … [Read more...] about Safe Way to Go
Field Evaluation of Pilot Vehicles and Portable Traffic Control Signals With and Without a Flagger
The national Manual on Uniform Traffic Control Devices (MUTCD) does not prohibit the use of a pilot vehicle in conjunction with portable traffic control signals (PTCSs), but it does require that a … [Read more...] about Field Evaluation of Pilot Vehicles and Portable Traffic Control Signals With and Without a Flagger
Portable Traffic Signals in Conjunction with Pilot Car Operations at Two-Lane, Two-Way Rural Highway Work Zones
A portable traffic signal (PTS) system is designed to move traffic through two-way rural highway work zones with one lane open to traffic. The primary objective of this study was to evaluate the use … [Read more...] about Portable Traffic Signals in Conjunction with Pilot Car Operations at Two-Lane, Two-Way Rural Highway Work Zones
Evaluation of Temporary Traffic Signals in Conjunction with Pilot Car Operations at Two-Way Long Temporary Work Zones
The primary objective of this study was to evaluate the use of Portable Traffic Signal (PTS) systems at long, rural two-lane work zones and to compare three different conditions for controlling … [Read more...] about Evaluation of Temporary Traffic Signals in Conjunction with Pilot Car Operations at Two-Way Long Temporary Work Zones
Traffic Control Device Evaluation Program: Technical Report
This project provides the Texas Department of Transportation with a mechanism to quickly and effectively conduct high-priority, limited scope evaluations of traffic control devices. Work during the … [Read more...] about Traffic Control Device Evaluation Program: Technical Report