Analysis of traffic accident characteristic on continuous long downgrade section

CHEN Bin; YUAN Wei; FU Rui; GUO Ying-shi

doi:10.19818/j.cnki.1671-1637.2009.04.015

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CHEN Bin, YUAN Wei, FU Rui, GUO Ying-shi. Analysis of traffic accident characteristic on continuous long downgrade section[J]. Journal of Traffic and Transportation Engineering, 2009, 9(4): 75-78. doi: 10.19818/j.cnki.1671-1637.2009.04.015

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CHEN Bin, YUAN Wei, FU Rui, GUO Ying-shi. Analysis of traffic accident characteristic on continuous long downgrade section[J]. Journal of Traffic and Transportation Engineering, 2009, 9(4): 75-78. doi: 10.19818/j.cnki.1671-1637.2009.04.015

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Analysis of traffic accident characteristic on continuous long downgrade section

doi: 10.19818/j.cnki.1671-1637.2009.04.015

CHEN Bin^{1, 2
,},
YUAN Wei²,
FU Rui²,
GUO Ying-shi²

1.
Sichuan College Key Laboratory of Road Traffic Safety, Sichuan Vocational and Technical College of Communications, Chengdu 611130, Sichuan, China
2.
School of Automobile, Chang'an University, Xi'an 710064, Shaanxi, China

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Author Bio:
CHEN Bin(1973-), male, associate professor, PhD, +86-28-82680060, cb1103@tom.cn
Received Date: 2009-02-18
Publish Date: 2009-08-25

Abstract

Abstract

Based on the investigation of traffic accident data and road design parameters of continuous long downgrade sections, the traffic safety situations of the sections were analyzed, and the traffic accident characteristics and reasons of sharp curve-steep downgrade section, continuous steep downgrade section and continuous gentle downgrade section were discussed.According to the relative data of typical sections, the relationship between traffic accidents and road vertical section parameters was studied based on statistics and regression methods.Analysis result indicates that the traffic accident rate is highest when the grade value of continuous long downgrade section is in the range of 3% to 4%.It has clear exponential relationship between the accident rate and average gradient of the section in front of more than 2 km at accident spot, and the determinant coefficient of regression model is more than 0.84.
- traffic safety,
- continuous long downgrade section,
- traffic accident characteristic,
- road vertical section parameter,
- regression analysis

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Analysis of traffic accident characteristic on continuous long downgrade section

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