Variable Speed Limit Sign (VSLS) Systems enable speed limits to be changed dynamically in response to traffic conditions so that traffic incidents can be reduced significantly on freeway work zones. … [Read more...] about Variable Speed Limit Signs: Control and Setting Locations in Freeway Work Zones
Traffic Regulations
Speed Behaviour in Work Zone Crossovers. A Driving Simulator Study
Reductions in speed and, more critically, in speed variability between vehicles are considered an important factor to reduce crash risk in work zones. This study was designed to evaluate in a virtual … [Read more...] about Speed Behaviour in Work Zone Crossovers. A Driving Simulator Study
Setting Work Zone Speed Limits
Increasing travel demands and an aging highway infrastructure drive the need for extensive construction, maintenance, and utility work zones. The introduction of work zone environments creates risks … [Read more...] about Setting Work Zone Speed Limits
Impact of Advisory Signs on Vehicle Speeds in Highway Nighttime Paving Project Work Zones
Pavement preservation projects typically require construction workers to conduct their work in close proximity to ongoing traffic. During paving operations, workers are located within a protected work … [Read more...] about Impact of Advisory Signs on Vehicle Speeds in Highway Nighttime Paving Project Work Zones
70 mph Study
In July and August 2014, the Pennsylvania Department of Transportation (PennDOT) and Pennsylvania Turnpike Commission (PTC) raised the posted speed limit on rural sections of Interstates 80, 380, and … [Read more...] about 70 mph Study
Work Zone Speed Management: A Synthesis of Highway Practice
This Synthesis of Practice focuses on speed management for work zones on roadways with ordinary (pre-construction) speed limits of 45 mph and above such as freeways, tollways, multilane divided rural … [Read more...] about Work Zone Speed Management: A Synthesis of Highway Practice