Highway-Rail Grade Crossing
Sight Distance Analysis

The table below is an analysis of the minimum needed approach and clearing track sight distances at a highway-rail grade crossing. The analysis is based on the methodology described in AASHTO's A Policy on Geometric Design of Highways and Streets (1990) and considers all relevant factors, including train and highway speeds, perception-reaction time, coefficient of friction, outer rail distance, vehicle length and acceleration rate, and crossing angle.