An adaptive control algorithm based on the in-phase queue dissipation was proposed to address the issues of low control efficiency and high model complexity in existing signal control algorithms. Firstly, a prediction model was established to optimize signal timing parameters, and calculate the vehicle's stopping delay based on traffic shockwave theory. Secondly, the acceleration and deceleration delays of vehicles were calculated based on the speed variation curve. Finally, state transition matrix for constructing dynamic optimization model was proposed to minimize delays, thereby realizing full-stage optimization of intersection signal control. Compared with fixed-time control and actuated control methods, the proposed method respectively reduced the average delay by 55% and 27.8% per vehicle in ultra-high-traffic demand scenario and reduced the average number of stops by 58.5% and 10.1%. In high-traffic demand scenario, the average delay decreased by 36.1% and 14.6% per vehicle, and the average number of stops decreased by 23.4% and 8.7%, respectively. In medium-traffic scenario, the average delay decreased by 22.8% and 10.5% per vehicle, and the average number of stops decreased by 3.3% and 2.6%. The results indicate that the algorithm proposed in this study can effectively improve the traffic operational efficiency at isolated intersections under different traffic demand conditions.
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