Comparing A Timed Exposure Methodology to the Nighttime Recognition Responses from SHRP-2 Naturalistic Drivers

Paper #:
  • 2017-01-1366

Published:
  • 2017-03-28
Abstract:
More than half all pedestrian fatalities occur at night. To address this problem, in the 1950s through 1970s Blackwell conducted considerable research that showed that a way to account for the limitations related to drivers’ expectancies at night would be to limit a driver’s time to view the forward roadway. The reduced information during the limited exposure time became a surrogate for the limited information available to on-road drivers at night. With the release of the SHRP-2 naturalistic database, we are able to see how drivers responded to in-road obstacles at night such as animals, bicyclists, pedestrians, and tree limbs. Using the naturalistic response data as a baseline, safe closed road recognition methodology was developed. The closed road study built upon the early nighttime recognition work by Blackwell, the observers were allowed to view the forward roadway for 1 or ¼ second. The results show that reducing the time of exposure could be used as a surrogate that accounts for the reduced information associated with unexpected events. When allowed to view the forward roadway for a full 1-second, drivers recognized deer, small animals, and pedestrians much earlier than when allowed to look forward only ¼ second. Also, the probability of recognition of the obstacles and the recognition distances after the ¼ second observation time were statistically similar to those of the naturalistic drivers in the SHRP-2 data. How this methodology might be used to measure hazard anticipation and recognition of groups such as novice and distracted drivers was addressed.
Access
Now
SAE MOBILUS Subscriber? You may already have access.
Buy
Attention: This item is not yet published. Pre-Order to be notified, via email, when it becomes available.
Select
Price
List
Download
$22.00
Mail
$22.00
Members save up to 36% off list price.
Share
HTML for Linking to Page
Page URL

Related Items

Technical Paper / Journal Article
2003-06-17
Standard
1971-01-01
Training / Education
2017-04-03
Article
2016-03-04
Technical Paper / Journal Article
2004-11-16
Technical Paper / Journal Article
2003-06-17
Technical Paper / Journal Article
2003-06-17
Training / Education
2017-04-06
Technical Paper / Journal Article
2003-06-17
Technical Paper / Journal Article
2003-06-17
Training / Education
2017-04-07
Technical Paper / Journal Article
2003-06-16