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Predicting Driver Emergency Response Onset using Time-to-Impact
ISSN: 0148-7191, e-ISSN: 2688-3627
Published March 29, 2022 by SAE International in United States
Annotation ability available
Conventional forensic analyses of collision avoidance behaviours involve assigning a perception and response time (PRT) interval to a driver which precedes the onset of evasive action. This approach relies on the investigator identifying a ‘time zero’ for when to begin the PRT interval, which nominally aligns with the first moment of hazard detection. However, depending on the incident circumstances, identifying the initial moment of hazard detection poses challenges. Recent research has shown the potential of an alternative method of forensic analysis that is based on the relationship between response onset and the projected time-to-impact (TTI). Accordingly, the aim of this research is to further investigate this relationship.
Twenty subjects viewed driver-perspective recordings of a simulated vehicle travelling down a major roadway past several two-way stop-controlled minor roads. At various intersections, intruding vehicles entered from the left or right. These intruders were either initially stationary at the stop bar and accelerated into the major roadway, or were travelling at a constant speed from a distance. Other vehicles turned left in front of the subject’s path from the opposing direction (i.e., left turn across path, or LTAP). All intruding vehicles entered the lane ahead or were first visible if in motion either 3 or 6 seconds prior to impact. Subjects were instructed to brake their vehicle when they perceived that evasive action was required to avoid a collision.
Results revealed that subjects responded within a narrow TTI range, on average, to lateral intruders regardless of the intruders’ kinematics. However, responses to LTAP intruders did not conform to the prevailing trends, suggesting that the hazard perception processes may differ depending on the type of collision threat. These results advance our understanding of the perceptual cues used by drivers when confronted with collision hazards.
CitationErazo, F. and Campbell, A., "Predicting Driver Emergency Response Onset using Time-to-Impact," SAE Technical Paper 2022-01-0806, 2022, https://doi.org/10.4271/2022-01-0806.
- Erazo , F. and Campbell , A. Driver Perception of Lateral Collision Threats SAE Technical Paper 2020-01-1198 2020 https://doi.org/10.4271/2020-01-1198
- Erazo , F. and Campbell , A. Effects of Situational Urgency on the Perception and Response Time to Lateral Collision Hazards SAE Int. J. Advances & Curr. Prac. in Mobility 3 4 2021 2017 2113
- Quimby , A. , and Watts , G. Transport and Road Research Laboratory 1981
- Underwood , G. , Ngai , A. , and Underwood , J. Driving Experience and Situation Awareness in Hazard Detection Safety Science 56 2013 29 35
- Borowsky , A. , Shinar , D. , and Oron-Gilad , T. Age, Skill and Hazard Perception in Driving Accident Analysis and Prevention 42 2010 1240 1249
- Borowsky , A. , Oron-Gilad , T. , Meir , A. , and Parmet , Y. Driver’s Perception of Vulnerable Road Users: A Hazard Perception Approach Accident Analysis and Prevention 44 2012 160 166
- Hugemann , W. , and Nickel , M. Longitudinal and Lateral Accelerations in Normal Day Driving Proc. in 12th EVU Annual Congress 2003
- D’Addario , P. and Donmez , B. The Effect of Cognitive Distraction on Perception-Response Time to Unexpected Abrupt and Gradually Onset Roadway Hazards Accident Analysis and Prevention 127 2019 177 185
- Ziraldo , E. , Attalla , S. , Kodsi , S. , and Oliver , M. Driver Response to Right Turning Path Intrusions at Signalized Intersections SAE Technical Paper 2020-01-0884 2020 https://doi.org/10.4271/2020-01-0884
- Mazzae , E.N. , Barickman , F.S. , Forkenbrock , G. , and Baldwin , G.H.S. 2003
- Ising , K.W. , Droll , J.A. , Kroeker , S.G. , D’Addario , P.M. et al. Driver-Related Delay in Emergency Braking Response to a Laterally Incurring Hazard Proceedings of the Human Factors and Ergonomics Society Annual Meeting 56 2012 705 709
- Toxopeus , R. , Attalla , S. , Kodsi , S. , and Oliver , M. Driver Response Time to Cyclist Path Intrusions SAE Technical Paper 2018-01-0531 2018 https://doi.org/10.4271/2018-01-0531
- Ziraldo , E. , Attalla , S. , Kodsi , S. , and Oliver , M. Driver response to Left Incurring Path Intrusions at Sign-Controlled Intersections SAE Technical Paper 2020-01-0886 2020 https://doi.org/10.4271/2020-01-0886
- Harwood , D. , Mason , J. , and Brydia , R. Intersection Sight Distance National Research Council Transportation Research Board NCHRP Report 383 1996
- Fitzpatrick , K. Gaps Accepted at Stop-Controlled Intersection Transportation Research Records 1303 1991
- Dissanayake , S. , Lu , J.J. , and Yi , P. Driver Age Differences in Day and Night Gap Acceptance Capabilities IATSS Research 26 1 2002 71 79
- Zohdy , I. , Rakha , H. , Alfelor , R. et al. Impact of Inclement Weather on Left-Turn Gap Acceptance Behavior of Drivers Transportation Research Record Report No. 2257 2011
- Kenskinen , E. , Ota , H. , and Katila , A. Older Drivers Fail in Intersection: Speed Discrepancies Between Older and Younger Male Drivers Accident Analysis and Prevention 30 3 1998 323 330
- Tang , K. and Kuwahara , M. Implementing the Concept of Critical Post-Encroachment Time for All-Red Clearance Interval Design at Signalized Intersections Journal of the Eastern Asia Society for Transportation Studies 9 2011 1485 1498