Roundabout signal timing method based on shift left turn and secondary parking

• Main Authors: DUAN CHENGZHANG, YANG LONGHAI, ZHANG XIQIAO, TANG JIN, CHEN LIN
• Format: Patent
• Language: Chinese; English
• Published: 28.05.2024
• Subjects: PHYSICS; SIGNALLING; TRAFFIC CONTROL SYSTEMS

The invention relates to the technical field of traffic transportation planning, in particular to a roundabout signal timing method based on shift left turn and secondary parking. The timing method comprises the following steps: step 1, investigating geometric conditions and traffic volume of the roundabout; determining a displacement left turn lane layout; traffic signal lamps are arranged, and corresponding traffic signs and marked lines are arranged; 2, signal lamp phases are designed, and a two-phase traffic rule is adopted; and step 3, determining the passing time of straight-going and right-turning vehicles according to the passing time of the secondary left-turning vehicles by taking traffic non-conflict as a condition and taking the maximum passing capacity of the roundabout as a target, and determining a signal timing method of the roundabout. The method specifically comprises the steps of left-turn ring-entering vehicle timing, left-turn ring-exiting shifting vehicle timing, straight-going vehicle t