Driver Behavior on Exit Freeway Ramp Terminals Using Naturalistic Driving Study Data

Using trip data from the SHRP-2 Naturalistic Driving Study (NDS) database collected in three different states across the United States, this paper investigates driver behavior at freeway exit ramp terminals. A qualitative assessment of driver speed behavior as they navigated the speed change lane (SCL) and the ramp was included in this study. Starting at the beginning of the SCL and continuing after diverging onto the ramp controlling curve, a trend of continuous vehicle deceleration was evident, which continued throughout the SCL and ramps. Another finding was that a portion of the drivers have a tendency to diverge onto the SCL on the taper and before the SCL has begun, with this behavior dominating on the taper-type SCL. Statistical analysis revealed that the measurements of driver behavior in general follow a normal distribution across all sites studied. The hypothesis tests looked at the differences between different driver behavior measurements on the research sites, and it was discovered that the speed and deceleration behavior of the drivers is related to the entire set of geometric characteristics present at the site, which was previously unknown. To account for the repeated measures induced by repeated visits by the same drivers in the dataset, linear-mixed models were created for the speed and deceleration behavior measures. To account for the repeated measures induced by repeated measures by the same drivers in the dataset, linear-mixed models were developed for the speed and deceleration behavior measures.

• Record URL:
  https://annualmeeting.mytrb.org/OnlineProgram/Details/17315
• Supplemental Notes:
  • This paper was sponsored by TRB committee AKD10 Standing Committee on Performance Effects of Geometric Design.
• Authors:
  • Alyamani, Mohannad
  • Hassan, Yasser
• Conference:
  • Transportation Research Board 101st Annual Meeting
  • Location: Washington DC, United States
  • Date: 2022-1-9 to 2022-1-13
• Date: 2022

Language

• English

Media Info

• Media Type: Digital/other
• Features: Figures; References; Tables;
• Pagination: 19p

Subject/Index Terms

• TRT Terms: Automatic data collection systems; Behavior; Drivers; Freeways; Off ramps; Speed change lanes
• Subject Areas: Highways; Operations and Traffic Management;

Filing Info

• Accession Number: 01839099
• Record Type: Publication
• Report/Paper Numbers: TRBAM-22-02286
• Files: TRIS, TRB, ATRI
• Created Date: Mar 21 2022 4:48PM