Use of Naturalistic Driving Study Data to Determine Right-Turn Driver Deceleration Behavior at Signalized Intersections

Understanding right-turn drivers’ deceleration behavior is important for traffic safety and operation. The previous efforts mainly focused on analyzing go-through vehicles’ driver deceleration behaviors instead of addressing right-turn driver deceleration characteristics. Previous studies often used the same deceleration rate for go-through vehicles and right-turn vehicles at intersections. Since right-turn drivers have to deal with more complex traffic situation, their deceleration behaviors are different with go-through vehicles’ behaviors. This paper used Naturalistic Driving Study (NDS) data to analyzing right-turn drivers’ deceleration characteristics at signalized intersections. The detailed speed and acceleration information were extracted from the time-series data. The results show that the max deceleration rate of right-turn driver is much lower than the maximum rate of 3 m/s² recommended by the Institute of Transportation Engineers Traffic Engineering Handbook and 3.4 m/s² recommended by AASHTO. The higher initial speed is associated with the longer deceleration time and higher average deceleration rate. Right-turn vehicles facing green signal have the shorter deceleration time compared to right-turn vehicles facing red signal. The statistics results also show that only 30.2% of right-turn drivers stop fully at intersections when the signal light is red. The results indicate that those previous deceleration models do not work well for right-turn vehicles. The regression for speed profile of right-turn vehicles is not successful.

• Supplemental Notes:
  • This paper was sponsored by TRB committee AHB65 Standing Committee on Operational Effects of Geometrics.
• Authors:
  • Xu, Hao
  • Wu, Jianqing
• Conference:
  • Transportation Research Board 97th Annual Meeting
  • Location: Washington DC, United States
  • Date: 2018-1-7 to 2018-1-11
• Date: 2018

Language

• English

Media Info

• Media Type: Digital/other
• Features: Figures; Photos; References; Tables;
• Pagination: 16p

Subject/Index Terms

• TRT Terms: Automatic data collection systems; Behavior; Deceleration; Right turns; Signalized intersections
• Subject Areas: Highways; Operations and Traffic Management; Safety and Human Factors;

Filing Info

• Accession Number: 01660158
• Record Type: Publication
• Report/Paper Numbers: 18-01877
• Files: TRIS, TRB, ATRI
• Created Date: Feb 15 2018 4:36PM