Drivers’ Braking Behaviors in Different Motion Patterns of Vehicle-Bicycle Conflicts
Joint Authors
Cheng, Bo
Wang, Wenjun
Li, Guofa
Hou, Lian
Duan, Jingliang
Li, Renjie
Source
Journal of Advanced Transportation
Issue
Vol. 2019, Issue 2019 (31 Dec. 2019), pp.1-17, 17 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2019-03-03
Country of Publication
Egypt
No. of Pages
17
Main Subjects
Abstract EN
Bicycling is one of the popular modes of transportation, but bicyclists are easily involved in injuries or fatalities in vehicle-bicycle (V-B) accidents.
The AEB (Autonomous Emergency Braking) systems have been developed to avoid collisions, but their adaptiveness needs to be further improved under different motion patterns of V-B conflicts.
This paper analyzes drivers’ braking behaviors in different motion patterns of V-B conflicts to improve the performance of Bicyclist-AEB systems.
For safety and data reliability, a driving simulator was used to reconstruct two typical conflict types, i.e., SCR (a bicycle crossing the road from right in front of a straight going car) and SSR (a bicycle cut-in from right in front of a straight going car).
Either conflict contained various parameterized motion patterns, which were characterized by a combination of parameters: Vc (car velocity), TTC (time-to-collision), Vb (bicycle velocity), and Dlat (lateral distance between the car and the bicycle) or Vlat (maximum lateral velocity of the bicycle).
Some 26 licensed drivers participated in an orthogonal experiment for braking behavior analysis.
Results revealed that drivers brake immediately when V-B conflicts occur; hence the BRT (brake reaction time) is independent of any motion pattern parameters.
This was further verified by another orthogonal experiment with 10 participants using the eye tracking device.
BRT in SSR is longer than that in SCR due to the less perceptible risk and drivers’ lower expectation of a collision.
The braking intensity and brake Pedal Speed are higher in short-TTC patterns in both conflict types.
Therefore, TTC is not a proper activation threshold but a reasonable indicator of braking intensity and Pedal Speed for driver-adaptive AEB systems.
By applying the findings in the Bicyclist-AEB, the adaptiveness and acceptability of Bicyclist-AEB systems can be improved.
American Psychological Association (APA)
Hou, Lian& Duan, Jingliang& Wang, Wenjun& Li, Renjie& Li, Guofa& Cheng, Bo. 2019. Drivers’ Braking Behaviors in Different Motion Patterns of Vehicle-Bicycle Conflicts. Journal of Advanced Transportation،Vol. 2019, no. 2019, pp.1-17.
https://search.emarefa.net/detail/BIM-1169825
Modern Language Association (MLA)
Hou, Lian…[et al.]. Drivers’ Braking Behaviors in Different Motion Patterns of Vehicle-Bicycle Conflicts. Journal of Advanced Transportation No. 2019 (2019), pp.1-17.
https://search.emarefa.net/detail/BIM-1169825
American Medical Association (AMA)
Hou, Lian& Duan, Jingliang& Wang, Wenjun& Li, Renjie& Li, Guofa& Cheng, Bo. Drivers’ Braking Behaviors in Different Motion Patterns of Vehicle-Bicycle Conflicts. Journal of Advanced Transportation. 2019. Vol. 2019, no. 2019, pp.1-17.
https://search.emarefa.net/detail/BIM-1169825
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1169825