TY - JOUR
T1 - The impacts of non-motorized traffic enforcement cameras on red light violations of cyclists at signalized intersections
AU - Lv, Huitao
AU - Li, Haojie
AU - Sze, N. N.
AU - Ren, Gang
N1 - Funding Information:
This work was supported by the National Key R&D Program of China (No. 2018YFE0102700).
Funding Information:
Gang Ren is currently a professor in transportation engineering and the director of the Major Projects and Collaborative Innovation Office of the university. His research interests include traffic behavior and safety analysis, emergency traffic management, and active transport optimization. He is the principal investigators of more than 10 research projects including three grants from the National Science Foundation of China (NSFC), and he has published more than 60 research papers in academic journals and conferences.
Publisher Copyright:
© 2022 National Safety Council and Elsevier Ltd
PY - 2022/12
Y1 - 2022/12
N2 - Introduction: With a significant increase in accidents involving cyclists, more attention has been paid to cycling safety. Previous studies on traffic accident revealed that red-light violations of non-motorized vehicles have become the leading cause of crashes at signalized intersections. The objective of this study is to investigate the impact of non-motorized traffic enforcement cameras (NTECs) on the red-light running behavior of cyclists, including ordinary e-bike riders, delivery e-bike riders, and bicyclists. Method: An observational study of 5,217 cyclists was conducted at six primary intersections in the downtown areas of Nanjing, China. A random parameter logit model was used to explore the safety effect of the NTECs and other factors related to red-light violation behavior. Results: The results indicate higher reductions in red-light violations at intersections with the NTECs compared than at the non-adjacent intersections without the NTECs. Furthermore, the NTECs demonstrated a beneficial but smaller impact on the reduction of violations at adjacent intersections. Another primary finding was that the effects of the NTECs varied among three types of cyclists (ordinary e-bike riders, delivery e-bike riders, and bicyclists). Conclusions: The NTECs were found to be most effective in the case of delivery e-bike riders, followed by ordinary e-bike riders and bicyclists. In addition, the factors associated with the red-light violation behaviors of these three groups were also found to be different. In general, group size, maximum waiting time, waiting position, and visual search were significantly related to the probability of red-light violations in all three groups. Practical Applications: Based on these findings, this study provides some feasible suggestions for improving the effect of the NTECs and for the future extension of the NTECs installation, such as the randomization of the enforcement and publicity campaigns.
AB - Introduction: With a significant increase in accidents involving cyclists, more attention has been paid to cycling safety. Previous studies on traffic accident revealed that red-light violations of non-motorized vehicles have become the leading cause of crashes at signalized intersections. The objective of this study is to investigate the impact of non-motorized traffic enforcement cameras (NTECs) on the red-light running behavior of cyclists, including ordinary e-bike riders, delivery e-bike riders, and bicyclists. Method: An observational study of 5,217 cyclists was conducted at six primary intersections in the downtown areas of Nanjing, China. A random parameter logit model was used to explore the safety effect of the NTECs and other factors related to red-light violation behavior. Results: The results indicate higher reductions in red-light violations at intersections with the NTECs compared than at the non-adjacent intersections without the NTECs. Furthermore, the NTECs demonstrated a beneficial but smaller impact on the reduction of violations at adjacent intersections. Another primary finding was that the effects of the NTECs varied among three types of cyclists (ordinary e-bike riders, delivery e-bike riders, and bicyclists). Conclusions: The NTECs were found to be most effective in the case of delivery e-bike riders, followed by ordinary e-bike riders and bicyclists. In addition, the factors associated with the red-light violation behaviors of these three groups were also found to be different. In general, group size, maximum waiting time, waiting position, and visual search were significantly related to the probability of red-light violations in all three groups. Practical Applications: Based on these findings, this study provides some feasible suggestions for improving the effect of the NTECs and for the future extension of the NTECs installation, such as the randomization of the enforcement and publicity campaigns.
KW - Cyclist safety
KW - Non-motorized traffic enforcement camera
KW - Red-light violation
KW - Signalized intersection
UR - http://www.scopus.com/inward/record.url?scp=85143553100&partnerID=8YFLogxK
U2 - 10.1016/j.jsr.2022.09.005
DO - 10.1016/j.jsr.2022.09.005
M3 - Journal article
C2 - 36481022
AN - SCOPUS:85143553100
SN - 0022-4375
VL - 83
SP - 310
EP - 322
JO - Journal of Safety Research
JF - Journal of Safety Research
ER -