Spatial-temporal varying coefficient model for lane-changing behavior in work zone merging areas. Issue 6 (2nd June 2022)

• Record Type: Journal Article
• Authors: Gan, Xiafan; Weng, Jinxian; Li, Wenwen; Han, Mengyuan
• Is Part Of: Journal of transportation safety & security. Volume 14:Issue 6(2022)
• Page Start: 949
• Page End: 972
• Publication Date: 2022-06-02
• Subjects: lane-changing behavior -- logistic regression -- spatial-varying effect -- time-varying effect -- work zone; Transportation -- United States -- Safety measures -- Periodicals; Transportation -- Security measures -- United States -- Periodicals; Transportation -- Safety measures; Transportation -- Security measures; United States; Periodicals; 353.9805
• DOI: 10.1080/19439962.2020.1864075
• Languages: English
• ISSNs: 1943-9970

Abstract

Abstract: This study investigates the lane-changing behavior in work zone merging areas during the period from the time of starting a lane-changing maneuver to that of completing the lane-changing maneuver. With vehicle trajectory data from short-term work zone sites, we establish a spatial-temporal varying coefficient model considering possible spatial-varying and time-varying effects. Model results show that four factors including the longitudinal gap between the lane-changing vehicle and lead vehicle, lane-changing vehicle speed, through lane lag vehicle type and crash severity between the lane-changing vehicle and the through lane lag vehicle exhibit spatial-varying effects on the drivers' lane-changing behavior, while time-varying effects are found from the lead vehicle speed in the merge lane, crash severities of the lane-changing vehicle with regard to the lead vehicle and the through lane lead vehicle. Time-varying and spatial-varying effects from vehicle crash severities between the lane-changing vehicle and through lane vehicles suggest that lane-changing vehicles tend to take a risky merge as the elapsed time increases or when they are closer to the work zone.