Reversible lane control method at intersection under influence of left-turn short lane

Abstract

The invention provides a control method for the signal timing design, the traffic signal lamp bank of reversible lanes and the lane signs of reversible lanes at the intersection of reversible lanes with/without the arrangement of a left-turn short lane. In consideration of the influence of a left-turn short lane on the saturation flow rate of an entrance lane, the phase effective green light time and the functions of reversible lanes are adopted as decision variables, and the minimization of the vehicle delay rate at the intersection and the maximization of the traffic capability at the intersection are adopted as objective functions. In this way, a signal timing optimized model system at the intersection is established based on the operational research and the traffic flow theory. Meanwhile, a specific design principle for designing the lane signs of reversible lanes is provided from the point of drivers. According to the traffic flow operating rule and the behavior characteristics of drivers, different coordination control rules for the traffic signal lamp bank of reversible lanes and the lane signs of reversible lanes are designed respectively for two conditions, namely the function invariable condition of reversible lanes and the function variable condition of reversible lanes during the control period switching process. The embodiments of the invention prove the feasibility and the validity of the above method. By adopting the above method, the intersection congestion problem caused by the tidal characteristics of the traffic flow can be effectively alleviated.

Description

technical field [0001] The invention belongs to the field of intelligent traffic control, and relates to a signal timing design suitable for intersections with (without) left-turn short lanes with variable guiding lanes and a control method for signal lamp groups and variable guiding lane signs. Background technique [0002] In recent years, the problem of urban traffic congestion has attracted more and more attention, seriously affecting people's travel efficiency and quality of life. At many intersections, traffic flow often has tidal characteristics, which is manifested in that the left-turn traffic volume is significantly greater than the through traffic volume in a certain period of time, and the opposite is true in another period of time. In order to solve the traffic congestion problem caused by the unbalanced distribution of traffic flow in each flow direction at the intersection, traffic engineers have proposed variable directional lane control technology. At this ...

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Problems solved by technology

my country issued the national standard GB5768.3-2009 "Road Traffic Signs and Markings" of the People's Republic of China in 2009, whi

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