Although law enforcement is an effective method to manage speeds, it requires significant resources to ensure adequate spatial and temporal compliance. In some cases, alternative speed management … [Read more...] about Evaluating Effectiveness of Dynamic Speed Display Signs in Transition Zones of Two-Lane Rural Highways in Pennsylvania
Overcoming Roadblocks to Innovation: Three Case Studies at the California Department of Transportation
This paper examines the experience of the California Department of Transportation (Caltrans) in three recent innovations developed at its Division of Research and Innovation. Although these … [Read more...] about Overcoming Roadblocks to Innovation: Three Case Studies at the California Department of Transportation
Nighttime Visibility of Prototype Work Zone Markings Under Dry, Wet-Recovery, and Rain Conditions
This paper presents the findings of a dynamic pavement marking visibility study conducted as part of the FHWA Highways for LIFE Technology Partnerships Program Temporary Wet-Weather Pavement Markings … [Read more...] about Nighttime Visibility of Prototype Work Zone Markings Under Dry, Wet-Recovery, and Rain Conditions
Evaluation of Speed Monitoring Displays for Work Zones in Las Vegas, Nevada
Speed monitoring displays (i.e., speed trailers) have been evaluated in many states for reducing vehicular speeds in work zones. This study evaluated the enhancements to speed trailers regarding … [Read more...] about Evaluation of Speed Monitoring Displays for Work Zones in Las Vegas, Nevada
QuickZone Improvement for Rural Freeway and Model Validation
This review indicated that in QuickZone 2.0 a deterministic queuing model is applied to calculate the delays for oversaturated conditions; stochastic and speed reduction delays were not included. Data … [Read more...] about QuickZone Improvement for Rural Freeway and Model Validation
Downstream Effects of Speed Photo—Radar Enforcement and Other Speed Reduction Treatments on Work Zones
The effects of automated speed photo—radar enforcement (SPE) and traditional speed reduction treatments (speed feedback trailer, presence of police vehicles with emergency lights on and off, and … [Read more...] about Downstream Effects of Speed Photo—Radar Enforcement and Other Speed Reduction Treatments on Work Zones