Ramp confluence control method and ramp confluence control system for urban expressway

Abstract

The invention discloses a ramp confluence control method for an urban expressway. The ramp confluence control method comprises the following steps: 1, collecting related motion state information of vehicles on a main road section of the whole expressway and afflux vehicles; 2, constructing a ramp confluence optimization control model; 3, optimizing the motion states of the vehicles on the main road and the afflux vehicles; 4, sending an optimized vehicle control instruction to each vehicle, and executing the control instruction by each vehicle; and 5, in the next control period, returning to continuously execute the steps 1-4. According to the ramp confluence control method for the urban expressway, unnecessary acceleration and deceleration of the main lane and ramp confluence vehicles areavoided, and the safety, economy and efficiency of diversion and confluence are effectively improved.

Description

technical field [0001] The invention relates to a ramp merge coordinated control technology, in particular to a ramp merge coordinated control method and system for urban expressway entrances. Background technique [0002] Urban expressway is a kind of expressway and is the main body of expressway. In the urban traffic system, the urban expressway has the function of ensuring the smooth and continuous driving of automobiles and improving the transportation efficiency within the city. [0003] At present, some patents focus on ramp merge control. For example, CN102314769A designed an intelligent safety early warning control method for the merge area of ​​the entrance ramp of the expressway. The method collects and analyzes the actual traffic conditions in the merge area, and performs real-time dynamic early warning for vehicles that are about to enter the merge area to avoid accidents. CN107093332B designed a safety early warning system for the merge area of ​​urban express...

AI Technical Summary

Problems solved by technology

[0004] The above technology has positive significance for improving the safety of urban ramps, but it either only provides early warning information, or unilaterally considers the coordinated movement relationship between the ramp merging vehicle and the adjacent vehicles on the main road, and does not consider the vehicle movement relationship in the entire control area of ​​the main road.

However, in the entrance ramp of urban expressway, the distance between vehicles on the main road is small and the traffic density is relatively high. Especially in the morning and evening rush hours on weekdays, the above method may cause problems such as the failure of ramp vehicles to merge, traffic fluctuations, congestion, and traffic safety. Efficient, safe and economical completion of vehicle merging

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