Truck-mounted attenuator (TMA) usage varies for a number of reasons, including apathy, loss of efficiency (real or perceived), fiscal constraints, and lack of information on when and how to use the … [Read more...] about Guidelines for the Use of Truck-Mounted Attenuators in Work Zones
Construction Sites
Redesign and Evaluation of Selected Work Zone Sign Symbols
A study of traffic sign symbols was completed recently at the FHWA Turner-Fairbank Highway Research Center in McLean, Virginia. As part of this research, four work zone traffic control warning signs ( … [Read more...] about Redesign and Evaluation of Selected Work Zone Sign Symbols
Field Studies of Temporary Pavement Markings at Overlay Project Work Zones on Two-Lane, Two-Way Rural Highways (with Discussion and Closure)
In response to FHWA's proposed rule requiring that all states use 4-ft pavement markings on 40-ft centers as temporary markings in highway work zones, NCHRP awarded a research contract to the Texas … [Read more...] about Field Studies of Temporary Pavement Markings at Overlay Project Work Zones on Two-Lane, Two-Way Rural Highways (with Discussion and Closure)
Delay Messages and Delay Tolerance at Houston Work Zones (abridgement)
A questionnaire survey of freeway drivers in Houston was conducted at six locations: I-10 W, I-10 E, I-45 N, I-45 S, US-59 S, and US-59 N. The questionnaire data were based on a license-plate survey … [Read more...] about Delay Messages and Delay Tolerance at Houston Work Zones (abridgement)
Portable Traffic Barrier for Work Zones
A portable, positive construction zone barrier is described. The barrier is suitable for use at sites where work will take as little as several hours. It is constructed from used cars and thrie-beam … [Read more...] about Portable Traffic Barrier for Work Zones
The Obstacle Course: Pedestrians in Highway Work Zones
There has been an increased awareness of the safety problems associated with highway work zones among traffic professionals and government agencies during the past several years. For the most part, … [Read more...] about The Obstacle Course: Pedestrians in Highway Work Zones