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Mathematical Problems in Engineering
Volume 2015 (2015), Article ID 803961, 6 pages
Research Article

Travel Distance on Each Grade Road of Urban City Based on Reliability

1School of Highway, Chang’an University, Xi’an, Shanxi 710064, China
2Beijing Key Lab of Transportation of Engineering, Beijing University of Technology, Beijing 100124, China

Received 18 July 2014; Accepted 12 September 2014

Academic Editor: Wuhong Wang

Copyright © 2015 Long Xue-qin et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


In order to reflect influence of travel time reliability on route choosing, considering traffic accidents’ influence under random state, we analyzed travel distance distribution regularity of each grade road, through traffic assignment. Travel time reliability model was produced and modified, considering the randomness of accidents, delay time, and capacity. The maximum preponderant travel range of each grade road was defined, and stochastic user equilibrium assignment was adopted to get travel turnover and distance, based on the corrected model. And then regulation of distance distribution was analyzed. Conclusion shows that reasonable travel distance of local way, distribution way, and primary way is 1 km, 2.28 km, and 3.54 km, respectively.