Regenerative Braking

A central question not yet examined in the literature is whether regenerative braking provides a kinematic negative acceleration advantage in time and distance over traditional driver accelerator release and service braking. This research explores three conditions of braking (traditional service braking, a low level of regenerative braking, and a high level of regenerative braking) to determine any safety advantages regenerative braking may offer. Thirty participants took part in a simulator study with a between-subjects study design, allocating 10 participants per condition. The study drive took place in a simulator and involved three braking events. The results showed a significant difference between the means of the three conditions for average acceleration of the vehicle in the time interval between the driver releasing the accelerator and pressing the brake for all three events. When events 1 and 2 were combined, there was significance with the same variable, as well as with maximum brake force. The significant measure, which compared the three means of the average acceleration of the vehicle in the time interval between throttle release and brake press, did indicate an acceleration advantage that was imparted to the driver. However, this advantage was not observed to propagate into traditional safety measures such as minimum time to collision (TTC).

• Dataset URL:
  https://doi.org/10.7910/DVN/CBVNUV
• 
• Record URL:
  http://safersim.nads-sc.uiowa.edu/final_reports/UI 3 Y2 Report_Final.pdf
• Record URL:
  https://rosap.ntl.bts.gov/view/dot/62009
• Supplemental Notes:
  • This research was sponsored by the U.S. Department of Transportation, University Transportation Centers Program. Supporting datasets available at: https://doi.org/10.7910/DVN/CBVNUV
• Corporate Authors:

  University of Iowa, Iowa City

  National Advanced Driving Simulator, 2401 Oakdale Boulevard
  Iowa City, IA  United States  52242-5003

  Safety Research Using Simulation University Transportation Center (SaferSim)

  University of Iowa
  Iowa City, IA  United States  52242

  Office of the Assistant Secretary for Research and Technology

  University Transportation Centers Program
  Department of Transportation
  Washington, DC  United States  20590
• Authors:
  • Mitropoulos-Rundus, Christopher
  • 0000-0001-6548-8340
  • Schwarz, Chris
  • 0000-0003-0291-7157
  • McGehee, Daniel
  • 0000-0002-7019-3317
• Publication Date: 2019-8

Language

• English

Media Info

• Media Type: Digital/other
• Edition: Research Report
• Features: Appendices; Figures; Photos; References; Tables;
• Pagination: 28p

Subject/Index Terms

• TRT Terms: Acceleration (Mechanics); Braking; Driving simulators; Regenerative braking; Safety analysis
• Subject Areas: Highways; Safety and Human Factors; Vehicles and Equipment;

Filing Info

• Accession Number: 01721977
• Record Type: Publication
• Contract Numbers: Grant No. 69A3551747131
• Files: UTC, NTL, TRIS, ATRI, USDOT
• Created Date: Nov 5 2019 3:33PM