|
|
|
| Research on the Improve the Maximum Speed Limit in Xiamen Wenxing Tunnel |
| ZHANG Qing - feng1，CHEN Xiao - yu1，CHU Yi2 |
| (1. China Railway Siyuan Survey and Design Group Co. Ltd. Xiamen Branch，Xiamen，Fujian 361010，China;2. Xiamen Municipal Public Security Bureau Traffic Police Detachment Order Management Brigade，Xiamen，Fujian 361004，China) |
|
|
|
|
Abstract Abstract:Research purposes： In recent years， Xiamen citizens often complained Wenxing tunnel low^ speed limit， traffic efficiency is not high. And there are no relevant regulations to improve the speed limit. In this paper，we will study the possibility of raising the speed limit，and try to extract the technical route to improve the speed limit of Wenxing tunnel. Research conclusions ：( 1 ) Through the analysis of geometric linear index and the actual operation speed，it is found that the overall speed limit is not feasible，but can increase the speed limit of some section. (2) Suggested that Wenxing tunnel section of the use of sub Lane speed limit mode，small car to speed up to 60 km/h，large vehicles to speed up to 50 km/h. Improve lighting， ventilation speed segment， signs， markings and signs. should be in accordance with the highest speed limit value (60 km/h) corresponding to the design speed of technical standards and requirements. (3 ) Suggestions for improving road speed limit ： First proposed to increase the speed limit on the road by the proposed increase in the speed limit to regulate compliance checks. Combined with the minimum length of the speed limit zone and the minimum length of the transition section，check whether the scope and length of the speed limit segment can be satisfied. In the running speed value analysis and correction is proposed based on the proposed increase in the maximum rate. Conditional use measured speed，insufficient conditions$ using simulation speed. Check improve lighting， ventilation speed segment, signs，markings，signs and other conditions are met the relevant requirements of this section of the maximum speed limit，not satisfy the conditions to be perfect. (4)The results can be used to improve the speed limit of highway and urban roads.
|
|
Received: 23 December 2016
|
|
|
|
|
|
|
2017, Vol. 34 
