Performance of Left-Turning Motor Vehicles from a Minor Road Approach at Non-Signalized At-Grade Intersections

The paper has analyzed the performance characteristics of motor vehicles which turn left from minor road approach systematically, and has studied characteristics of speed variation and various impacting factors for left-turning vehicles from minor road approach, using statistical methods. Theory analysis of the performance of left-turning vehicles has been carried out and has been verified by using data collected in the field. Forecast models for acceleration of left-turning motor vehicles from minor road approach have been constructed and impacts upon traffic safety have also been discussed. Results of the paper can be used to analyze traffic performance of motor vehicles making left-turn movements from minor road approach at non-signalized at-grade intersections. They are also helpful for the analysis of traffic safety at those locations.