THE LENGTHS OF SPEED-CHANGE LANES OF HIGHWAY

Abstract

In order to achieve the purpose of speed with the design, comfort and safety for people and vehicles when joining in and out of expressways, the technical standards not only pay attention for the highway on the planes and vertical tracking, but also pay attention to the speed-change lane. Content of the article refers to the method of calculating the total length of the speed change lane in accordance with Vietnam Standard TCVN 5729: 2012 – High-way designed requirements, comparison with TCVN 4054 : Roadways - designed requirements. This makes conclusions for the future design of high-ways and roads improvements and upgrades.