Critical Gap Analysis of U-turn Median Openings Under Mixed Traffic

Establishment of un-signalized median openings have expanded in numerous urban districts of cities in India. The thought process behind this establishment is to take out issues connected with illicit U-turns occurring at crossing points and other transportation facilities near these median openings on multi-lane urban streets. Gap Acceptance concept of U-turn drivers is an imperative angle at un-signalized median openings for deciding limit of accidents. Critical Gap structures the sole parameter in Gap acceptance models for assessing U-turns at median openings. Estimation of critical gaps for U-turn vehicles at median openings under mixed traffic conditions have not been addressed until today. The explanation for this carelessness is the complex vehicular associations and dangerous path changing operations by non-motorized vehicles at these facilities. So as to take care of this issue and to address the blended/ mixed traffic conditions in India critical gaps were assessed utilizing a few Gap acceptance models with a point of evaluating limit of these U-turns at median openings.