| Abstract: | Traffic control devices are a primary means of communicating highway information to road users. The design, application, and maintenance of traffic control devices are under constant transformation as new technologies, methodologies, and policies are introduced. This project provides the Texas Department of Transportation with a mechanism to conduct high-priority, limited-scope evaluations of traffic control devices. Research activities conducted and concluded during the 2022 fiscal year included: 1) Review of overhead lane control signs for frontage road and ramp approaches to signalized intersections; 2) Examination of vehicle speeds and signing needs for gradual curves; 3) Investigation of countermeasures for unexpected pedestrians on high-speed roads; 4) Evaluation of driveway assistance devices in lane closures on two-lane, two-way roads. |
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