Median Design Analysis in the Manner of U-Turn Followed by Right-Turn

U-turn followed by right-turn means left turn vehicles turn right first, and then turn around in the proper position downstream, which is a traffic organization method to achieve left turn indirectly while direct left turn is forbidden in the intersection. To achieve the goal, more requirements are brought forward to median design. In order to cooperate with the manner of u-turn followed by right-turn, median type selection is need firstly. After the contrast of several median types home and overseas, the raised median is considered the best choice fit the u-turn followed by right-turn, balancing the factors of function, land use, and etc. Then discussions detailed on three aspects are followed, which are median width design, median opening design, and left turn lane design. Especially, aiming at the statement of narrow median installment internal, which is impossible to setup left turn lane, simulation evaluation for traffic operation is run on the condition of with or without left turn lane, in the environment of different traffic flow, different design speed, different intersections layout, and etc. The evaluation is a very important aspect of applicability assessment of u-turn followed by right-turn in China.