|Table of Contents|

Evaluation method of urban expressway service level based on traveling speed index(PDF)

《交通运输工程学报》[ISSN:1671-1637/CN:61-1369/U]

Issue:
2014年05期
Page:
68-73
Research Field:
交通运输规划与管理
Publishing date:

Info

Title:
Evaluation method of urban expressway service level based on traveling speed index
Author(s):
YANG Fu-she1; 2;  ZOU Qun3;  LI Ming1;  CHEN Kuan-min1;  GAO Yang1
1. School of Highway, Chang'an University, Xi'an 710064, Shaanxi, China; 2. School of Science, Chang'an University, Xi'an 710064, Shaanxi, China; 3. School of Civil Engineering and Architecture, Nanchang Institute of Technology, Nanchang 330029, Jiangxi, China
Keywords:
urban expressway;  service level;  evaluation method;  traveling speed index;  consistency test
PACS:
U491.113
DOI:
-
Abstract:
According to the characteristics of urban expressway, urban expressway was divided into basic section, weaving section, diverging and merging section. The traveling speed of free flow was calculated by using Greenshields model, and spot speed data were collected through dual-loop detector to estimate traveling speed. After the consistency test of right side mean and mean square deviation for traveling speed index, the service level was quantified, the evaluation method of urban expressway service level based on traveling speed index was proposed, and example verification was carried out on the Southern Section of Second Circular Road of Xi'an City. Evaluation result shows that when the traveling speeds in free flow, peak period andflat peak period are 82.514, 47.825 and 67.930 km·h-1 respectively, the mean and mean square deviation of traveling speed index in peak period are 7.206, 8.482 respectively, and the service level of urban expressway is 2.667 and is Ⅲ level. The mean and mean square deviation of traveling speed index in flat peak period are 6.408, 8.960, and the service level of urban expressway is 4.083 and is Ⅱ level. The calculation result consists with actual situation, so the proposed method is effective. 5 tabs, 2 figs, 18 refs.

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Last Update: 2014-10-30