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
Revised Process for Work Zone Decision Making Based on Quantitative Performance Measures
Work zones create one of the most challenging environments for drivers. Implementing work zones on freeways creates many issues, especially regarding mobility. Decisions made regarding work zones … [Read more...] about Revised Process for Work Zone Decision Making Based on Quantitative Performance Measures
Strategy Implementation by State Transportation Agencies to Maintain Work Zone Mobility and Safety
Mitigation strategies for work zone congestion are used by transportation agencies to manage or reduce congestion through a work zone as part of the project’s transportation management plan. The … [Read more...] about Strategy Implementation by State Transportation Agencies to Maintain Work Zone Mobility and Safety
Effectiveness of Speed Control Measures on Nighttime Construction and Maintenance Projects: Some New Evidence
Nighttime work-zone safety has become a concern among state transportation agencies due to an increasing number of work-zone fatalities and the high percentage of roadwork performed at night. Speed … [Read more...] about Effectiveness of Speed Control Measures on Nighttime Construction and Maintenance Projects: Some New Evidence
State Worker-Safety Efforts Scrutinized
The Labor Department said it would step up oversight of state workplace-safety programs, following a report from the U.S. Occupational Safety and Health Administration critical of Nevada Occupational … [Read more...] about State Worker-Safety Efforts Scrutinized