This digest summarizes the results of NCHRP Project 5-14, "Advanced Warning Arrow Panel Visibility." The project evaluated the factors affecting the detection and recognition of arrow panels and … [Read more...] about Guidelines for the Effective Use and Procurement of Advanced Warning Arrow Panels
Arrow Panels
Photometric Requirements for Arrow Panels
Arrow panels are often used in work zones to inform drivers of the need for a lane change or caution on the part of the driver. The Manual on Uniform Traffic Control Devices (MUTCD) requires that Type … [Read more...] about Photometric Requirements for Arrow Panels
Evaluation of Arrow Panel Displays for Temporary Work Zones
The Oregon Department of Transportation evaluated the effectiveness of a "sequentially flashing diamond" arrow panel display as advance caution warning in temporary work zones. This display was … [Read more...] about Evaluation of Arrow Panel Displays for Temporary Work Zones
Flashing Arrowboards in Advance of Freeway Work Zones
The results of controlled field studies conducted by the Texas Transportation Institute to evaluate the effectiveness of flashing arrowboards located in advance of lane-closure work zones are … [Read more...] about Flashing Arrowboards in Advance of Freeway Work Zones
Sight-Distance Requirements at Lane-Closure Work Zones on Urban Freeways
Findings of field studies conducted to evaluate the effects of sight distance to lane closures at urban freeway work zones are presented and discussed. The studies investigated the interaction of … [Read more...] about Sight-Distance Requirements at Lane-Closure Work Zones on Urban Freeways
Truck Drivers’ Concerns in Work Zones: Travel Characteristics and Accident Experiences
A study was conducted to determine truck drivers' concerns about traffic control in work zones (WZs) and to identify the locations of accidents and risky driving situations. A statewide opinion survey … [Read more...] about Truck Drivers’ Concerns in Work Zones: Travel Characteristics and Accident Experiences