According to the Federal Highway Administration (FHWA), US work zones on freeways account for nearly 24% of nonrecurring freeway delays and 10% of overall congestion. Historically, there have been … [Read more...] about Evaluation of Interstate Work Zone Mobility Using Probe Vehicle Data and Machine Learning Techniques
Traffic Flow
Practical Road-Resistance Functions for Expressway Work Zones in Occupied Lane Conditions
In order to create a practical road-resistance function for work zones under different lane occupation conditions, the expected speed of vehicles was calibrated in the work zone simulation model based … [Read more...] about Practical Road-Resistance Functions for Expressway Work Zones in Occupied Lane Conditions
Variable Speed Limit for Freeway Work Zone with Capacity Drop Using Discrete-Time Sliding Mode Control
Freeway work zone with lane closure has a direct negative impact on travel time, safety, and environmental sustainability. The capacity drop at the onset of the congestion can also further reduce the … [Read more...] about Variable Speed Limit for Freeway Work Zone with Capacity Drop Using Discrete-Time Sliding Mode Control
Development of a Travel-Time Reliability Measurement System
This study has developed a computerized Travel-Time Reliability Measurement System (TTRMS), which can automate the time-consuming process of gathering and managing data from multiple sources and … [Read more...] about Development of a Travel-Time Reliability Measurement System
Predicting Freeway Work Zone Capacity Distribution Based on Logistic Speed-Density Models
Speed-volume-density relationship and capacity are key elements in modelling traffic operations, designing roadways, and evaluating facility performance. This paper uses a modified five-parameter … [Read more...] about Predicting Freeway Work Zone Capacity Distribution Based on Logistic Speed-Density Models