This study aims to develop work zone speed-flow and capacity models, which incorporate work zone configuration factors including the number of work zones, geometrical alignment, work zone speed limit, … [Read more...] about Incorporating Work Zone Configuration Factors into Speed-Flow and Capacity Models
Traffic Speed
New Methodology to Determine Work Zone Capacity Distribution
Since the true value of work zone capacity is difficult to be known with a perfect confidence, work zone capacity should be represented by means of a probability distribution. Therefore, this study … [Read more...] about New Methodology to Determine Work Zone Capacity Distribution
Preliminary Evaluation of Dynamic Speed Displays with Conditional Messaging
Changeable message signs (CMSs) and dynamic speed displays (DSDs) for speed management applications have been deployed to address multiple situations. These have often been reported to produce … [Read more...] about Preliminary Evaluation of Dynamic Speed Displays with Conditional Messaging
Comparison of Vehicle Speeds Adjacent to Maintenance Work Zones with and Without a Mobile Barrier
Highway maintenance and construction activities are oftentimes performed in a travel lane, median, or shoulder adjacent to vehicles traveling at relatively high speeds and in close proximity to the … [Read more...] about Comparison of Vehicle Speeds Adjacent to Maintenance Work Zones with and Without a Mobile Barrier
Calibration of VISSIM for Freeway Work Zones with Time-Varying Capacity
This paper presents a systematic procedure for calibration of a VISSIM model to replicate time dependent capacity, speed, and queue length for a 2-to-1 freeway work zone. The procedure models time … [Read more...] about Calibration of VISSIM for Freeway Work Zones with Time-Varying Capacity
Driving Speed Behavior of Cars and Trucks on Six-Lane Highway Work Zone Considering Lane and Location Deviation
Work zones are not only traffic bottlenecks, but also critical points for the safety of both vehicle occupants and workers. Vehicle speed is a key factor to estimate traffic efficiency and understand … [Read more...] about Driving Speed Behavior of Cars and Trucks on Six-Lane Highway Work Zone Considering Lane and Location Deviation