- Volume 18 Issue 4
DOI QR Code
Evaluation of Highway Traffic Safety using Reliability Theory
신뢰도를 활용한 도로시설 교통안전성 평가기법
- Oh, Heung-Un (Department of Urban & Transportation Engineering College of Engineering)
- 오흥운 (경기대학교 공과대학 도시.교통공학과)
- Received : 2016.05.13
- Accepted : 2016.08.01
- Published : 2016.08.16
PURPOSES : This paper proposes a reliability index for the safety evaluation of freeway sections. It establishes a reliability index as a safety surrogate on freeways considering speeds and speed dispersions. METHODS : We collated values of design elements including radii, curve lengths, vertical slopes (absolute values), superelevations, and vertical slopes from seven freeway sections in Korea. We also collected data about driving speeds, traffic accidents, and their deviations. We established a reliability index using these variables. RESULTS : The average radii, curve lengths, and superelevations are highly correlated with the incidence of traffic accidents. Deviations in radius and curve lengths show an especially high correlation. The reliability index, derived from speed and speed dispersions of the seven freeway sections, also correlated highly with accidents with a correlation index of 0.63. CONCLUSIONS : Since the reliability index obtained from speed and speed dispersions are highly correlated with traffic accidents, we conclude that a reliability index can be a safety surrogate on freeways considering speeds and speed dispersions together in terms of design and operational levels.
Supported by : 경기대학교
- AASHTO.(2004). A policy on geometric design of highways and streets. American Association of State Highway and Transportation Officials (AASHTO), Washington D.C.
- Cafiso, S., Lamm, R., and La Cava, G. (2004). "Fuzzy model for safety evaluation process of new and old roads."Journal of the Transportation Research Board, Vol. 1881, pp. 54-62. https://doi.org/10.3141/1881-07
- Davis, J. W. (1996). The effects of higher speed limits in New Mexico. Draft. Grant 1-TR-97-01. University of New Mexico.
- Davis, J. W. (1998). The effects of higher speed limits in New Mexico. Grant 98-TR-01-01. Division of Government Research, University of New Mexico.
- Garber, N. J., and Gadiraju, R. (1988). Speed variance and its influence on accident. Research Report, AAA Foundation for Traffic Safety, Washington, D.C.
- Harr, M. E. (1997). Reliability based design in civil engineering. Dover Publications, Inc., New York.
- Lamm, R., Choueiri, E. M., Hayward, J. C., and Paluri, A. (1988). "Possible design procedure to promote design consistency in highway geometric design on two-lane rural roads."Journal of the Transportation Research Board, Vol. 1195, pp. 111-122.
- Lamm, R., Psarianos, B., and Cafisori, S. (2002)." Safety evaluation process for two-lane rural roads: A 10-year review."Journal of the Transportation Research Board, Vol. 1796, pp. 51-59. https://doi.org/10.3141/1796-06
- Lave, C. (1985). "Speeding, coordination, and the 55-mph limit." The American Economic Review, Vol. 75, pp. 1159-1164.
- MLTM. (2008). Highway design guideline (도로구조시설기준). Ministry of Land, Transportation and Maritime (MLTM), Seoul, Republic of Korea.
- NCHRP Report 502. (2003). Geometric design consistency on high-speed rural two-lane roadways. Transportation Research Board, National Research Council, Washington, D.C.
- Nilsson, G. (1990). Reduction in the speed limit from 110 km/h to 90 km/h during summer 1989. VTI Report 358A. Swedish Road Safety Office.
- Oh, H. and Mun, S. (2012) "Design speed based reliability index model for roadway safety evaluation." KSCE Journal of Civil Engineering, Vol. 16, Issue 5, pp. 845-854. Seoul. https://doi.org/10.1007/s12205-012-1469-9
- Polus, A., Poe, C. M., and Mason, J. R. (1995). Review of international design speed practices in roadway geometric design. International Symposium on Highway Geometric Design Practices, Transportation Research Board, Boston.
- Solomon, D. (1964). Accidents on main rural highways related to speed, driver and vehicle. FHWA, U.S. Department of Transportation, Washington, D.C.
- Special Report 254. (1998). Managing speed, review of current practice for setting and enforcing speed limits. Transportation Research Board, National Research Council, Washington, D.C.
- Taylor, D. H. (1964). "Drivers galvanic skin response and the risk of accidents." Ergonomics, Vol. 7, pp. 439-451. https://doi.org/10.1080/00140136408930761
- Watter, P., and O'Mahony, M. (2007). The relationship between geometric design consistency and safety on rural single carriageways in Ireland. European Transport Conference, Noordwijkerhout, Netherlands.