Road design

Table of Contents

1.6 Safety Performance of Interchanges

An interchange improves traffic operation and safety at a site by removing conflict between major traffic movements and controlling conflict associated with minor traffic movements. All drivers travelling through an interchange on the major road only face conflict with traffic that is diverging or merging (apart from that resulting from congestion within the traffic stream). The main traffic conflicts at interchanges are usually associated with the at-grade intersections at the ramp terminals with the minor road.