Making drivers comply with work zone speed limlits can be a difficult task. In 2000, there were 9500 crashes within a work zone and speed was the major cause in 42% of those crashes. The problem is … [Read more...] about Slow Down! TTI Researchers Recommend Strategies for Slowing Drivers Around Work Zones
Speed Limits
Estimation of Relationships Between 85th-Percentile Speed, Standard Deviation of Speed, Roadway and Roadside Geometry, and Traffic Control in Freeway Work Zones
Understanding speed behavior in construction work zones is critical to making appropriate geometric design, roadside design and traffic control decisions. Gaps exist in national work zone design … [Read more...] about Estimation of Relationships Between 85th-Percentile Speed, Standard Deviation of Speed, Roadway and Roadside Geometry, and Traffic Control in Freeway Work Zones
Field Evaluation of Variable Advisory Speed Limit System for Reducing Traffic Conflicts at Work Zones
A practical methodology to reduce the traffic conflicts at work zones was developed and evaluated in the field. The proposed system uses variable advisory speed limits that are determined with a … [Read more...] about Field Evaluation of Variable Advisory Speed Limit System for Reducing Traffic Conflicts at Work Zones
Guidelines for Work Zone Intrusion Countermeasures
Provides use guidelines and reporting requirements for the following: rumble strips, channelizing device spacing reduction, flagger station setups, work zone speed limit reductions, police … [Read more...] about Guidelines for Work Zone Intrusion Countermeasures
Construction Work Zone Speed Limits – Guidelines and Documentation
This engineering instruction bulletin (EI 95-032) is intended to provide guidance to designers and construction personnel to establish appropriate work zone speed limits. … [Read more...] about Construction Work Zone Speed Limits – Guidelines and Documentation