Preferred Following Distance and Performance in an Emergency Event While Using Cooperative Adaptive Cruise Control

This study explored human factors issues associated with cooperative adaptive cruise control (CACC); specifically the relationship between drivers’ preferred following distance, assigned following distance, and driving performance. Participants drove in a dedicated lane and experienced a vehicle merging in front of their vehicle and later, an emergency event that required intervention in order to avoid a collision. Drivers followed at either a near or a far distance. Drivers’ perceived workload did not vary between the cruise and postmerge periods. However, workload was significantly greater after the emergency crash event. Workload did not vary significantly based on following distance assignment or preference. Those participants assigned to the near following distance were more likely to hover their foot over the brake during the merging event and to react faster to the emergency event. As with workload, performance (collision avoidance) did not vary significantly due to following distance assignment or preference. In other words, one’s abilities may not necessarily reflect their following preferences. This is a promising finding for widespread implementation of CACC.

• Record URL:
  http://drivingassessment.uiowa.edu/sites/default/files/DA2017/papers/07.pdf
• 
• Supplemental Notes:
  • Abstract reprinted with permission of University of Iowa Public Policy Center.
• Corporate Authors:

  University of Iowa, Iowa City

  Public Policy Center
  Department of Civil and Environmental Engineering
  Iowa City, IA  United States  52242-1192
• Authors:
  • Balk, Stacy A
  • Jackson, Steven
  • Philips, Brian
• Conference:
  • 9th International Driving Symposium on Human Factors in Driver Assessment, Training, and Vehicle Design
  • Location: Manchester Village Vermont, United States
  • Date: 2017-6-26 to 2017-6-29
• Publication Date: 2017

Language

• English

Media Info

• Media Type: Digital/other
• Features: Figures; References;
• Pagination: pp 30-36
• Monograph Title: Driving Assessment 2017: Proceedings of the 9th International Driving Symposium on Human Factors in Driver Assessment, Training, and Vehicle Design

Subject/Index Terms

• TRT Terms: Autonomous intelligent cruise control; Crashes; Driver performance; Following distance; Human factors
• Uncontrolled Terms: Cooperative adaptive cruise control; Crash avoidance
• Subject Areas: Highways; Safety and Human Factors;

Filing Info

• Accession Number: 01664189
• Record Type: Publication
• Files: TRIS
• Created Date: Mar 26 2018 9:19AM