Automated Roundabout Safety Analysis: Diagnosis and Remedy of Safety Problems
Publication: Journal of Transportation Engineering
Volume 142, Issue 12
Abstract
The use of roundabouts is gaining popularity in North America for their safety, capacity, and environmental benefits. Studies have shown that roundabouts can significantly reduce injury collisions compared to stop control and traffic signals. As more roundabouts are constructed, there will be an increased need for a detailed analysis of their safety performance. Traditional road-safety analysis of roundabouts has relied on the use of historical collision records. This approach offers a less-complete understanding of roundabouts safety and their effects on the behavior of drivers, pedestrians, and cyclists. This paper represents a case study where automated video-based traffic conflicts analysis is used to diagnose safety issues at a roundabout in Vancouver, British Columbia, Canada. Traffic conflicts are automatically identified and analyzed to develop an in-depth understanding of the behavior of road users and the causes of traffic conflicts. Conflicts contributing factors were identified and safety countermeasures are presented.
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References
Amundsen, F., and Hydén, C. (1977). First workshop on traffic conflicts, Institute of Transport Economics, Oslo, Norway.
Autey, J., Sayed, T., and Zaki, M. H. (2011). “Safety evaluation of right-turn smart channels using automated traffic conflict analysis.” Accid. Anal. Prev., 45, 120–130.
Chin, H.-C., and Quek, S.-T. (1997). “Measurement of traffic conflicts.” Saf. Sci., 26(3), 169–185.
El-Basyouny, K., and Sayed, T. (2013). “Safety performance functions using traffic conflicts.” Saf. Sci., 51(1), 160–164.
Google Maps. (2011). 〈http://www.google.com/maps〉 (Apr. 1, 2011).
Hayward, J. (1968). “Near-miss determination through use of a scale of danger.” Highway Res. Rec., 384, 24–34.
Hu, W., Xie, D., and Tan, T. (2004). “A hierarchical self-organizing approach for learning the patterns of motion trajectories.” IEEE Trans. Neural Netw., 15(1), 135–144.
Hydén, C. (1987). The development of a method for traffic safety evaluation: The Swedish traffic, Swedish Traffic Conflicts Technique, Dept. of Traffic Planning and Engineering, Lund Univ., Lund, Sweden.
Ismail, K., Sayed, T., and Saunier, N. (2013). “A methodology for precise camera calibration for data collection applications in urban traffic scenes.” Can. J. Civ. Eng., 40(1), 57–67.
Ismail, K., Sayed, T., Saunier, N., and Lim, C. (2009). “Automated analysis of pedestrian–vehicle conflicts using video data.” Transp. Res. Rec., 2140, 44–54.
Ismail, K. A. (2010). Application of computer vision techniques for automated road safety analysis and traffic data collection, Univ. British Columbia, Vancouver, Canada.
Mandavilli, S., McCartt, A. T., and Retting, R. A. (2009). “Crash patterns and potential engineering countermeasures at Maryland roundabouts.” Traffic Injury Prev., 10(1), 44–50.
Montella, A. (2011). “Identifying crash contributory factors at urban roundabouts and using association rules to explore their relationships to different crash types.” Accid. Anal. Prev., 43(4), 1451–1463.
Perkins, R., and Harris, J. (1968). “Traffic conflict characteristics: Accident potential at intersections.” Highway, 225, 35–43.
Sacchi, E., Sayed, T., and deLeur, P. (2013). “A comparison of collision-based and conflict-based safety evaluations: The case of right-turn smart channels.” Accid. Anal. Prev., 59, 260–266.
Saunier, N., and Sayed, T. (2007). “Automated road safety analysis using video data.” Transp. Res. Rec., 2019, 57–64.
Saunier, N., and Sayed, T. (2008). “A probabilistic framework for automated analysis of exposure to road.” Transp. Res. Rec., 2083, 96–104.
Saunier, N., Sayed, T., and Ismail, K. (2010). “Large scale automated analysis of vehicle intereactions and collisions.” Transp. Res. Rec., 2147, 42–50.
Saunier, N., and Sayed, T. A. (2006). “A feature-based tracking algorithm for vehicles in intersections.” IEEE 3rd Canadian Conf. on Computer and Robot Vision, IEEE, Quebec City.
Sayed, T., Brown, G., and Navin, F. (1994). “Simulation of traffic conflicts at unsignalized intersections with TSC-Sim.” Accid. Anal. Prev., 26(5), 593–607.
Sayed, T., and Zein, S. (1999). “Traffic conflict standards for intersections.” Transp. Plan. Technol., 22(4), 309–323.
Songchitruksa, P. (2004). “Innovative non-crash-based safety estimation: An extreme value theory approach.” Ph.D. thesis, Purdue Univ., West Lafayette, IN.
Zheng, D., Qin, X., and Noyce, D. A. (2010). “Negotiation-based conflict exposure methodology in roundabout crash pattern analysis.” Transportation Research Board 89th Annual Meeting, Transportation Research Board, Washington DC, 17.
Information & Authors
Information
Published In
Journal of Transportation Engineering
Volume 142 • Issue 12 • December 2016
Copyright
© 2016 American Society of Civil Engineers.
History
Received: Mar 17, 2015
Accepted: Apr 25, 2016
Published online: Jul 18, 2016
Published in print: Dec 1, 2016
Discussion open until: Dec 18, 2016
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