A ramp merge control method for urban expressways

Abstract

The invention discloses an urban expressway-oriented ramp merge control method, comprising the following steps: step 1, collecting relevant motion state information of vehicles in the main section of the expressway and incoming vehicles; step 2, constructing a ramp merge optimization control model; Step 3, optimize the movement state of the vehicles on the main road and incoming vehicles; Step 4, send the optimized vehicle control command to each vehicle, and each vehicle executes the control command; Step 5, in the next control cycle, return to continue to execute 1~4 step. The urban expressway-oriented ramp merge control method of the present invention avoids unnecessary acceleration and deceleration of main lanes and ramp merge vehicles, and effectively improves the safety, economy and efficiency of diverge and merge.

Description

technical field [0001] The invention relates to a ramp merge coordinated control technology, in particular to a ramp merge coordinated control method facing the entrance of an urban expressway. 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 expres...

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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