Assessing an optimum vision to ensure safety for all modes of transport vehicles at cross-roads.

Abstract

     This paper presents a method to determinethe optimal sight distancefor road and rail vehicles to ensure traffic safety at railway level crossings. The optimal sight distance that needs to maintain at levelcrossingsisa parameterthat is calculated depending on the width of road and railway clearance, the size and approach speeds of road vehicles and rail vehicles. This method can be applied to calculate the optimal sight distance atlevel crossings for each specific case.The last part of this paper presents some results of application of this method to calculate optimal sight distance at some level crossings in Hanoi.