Method for determining length of variable guide lane for signal control intersection approach

Abstract

The invention belongs to the field of road traffic sign marked lines, and discloses a method for determining the length of a variable guide lane for a signal control intersection approach. The method comprises the steps of first acquiring traffic data information that the variable guide lane steers in a corresponding direction, then converting obtained traffic volume relevant to a variable guide lane steering lane into an equivalent standard small automobile traffic volume, further utilizing an M / M / N model in the queuing theory to calculate the number of queuing vehicles behind a stop line of the signal control intersection approach according to a multi-path queuing multi-channel system and with combination of an approach lane queuing imbalance coefficient, and lastly converting the vehicle number into vehicle average queuing length in meter to serve as a value of the length of the variable guide lane for the signal control intersection approach. The method for determining the length of the variable guide lane for the signal control intersection approach can enable the vehicles on the upper stream of the variable guide lane to be smoothly driven into the intersection approach so as to improve approach traffic efficiency.

Description

technical field [0001] The invention relates to the field of road traffic signs and markings in traffic engineering, in particular to a method for determining the length of an entrance road using a variable guiding lane. Background technique [0002] In order to standardize and improve the traffic efficiency of signalized intersections, a common practice is to clearly fix the direction of travel of left turn, straight ahead or right turn for each lane at the entrance of the intersection. However, due to the random arrival characteristics of the traffic flow, in some time periods, the traffic flow of a certain turn of the entrance road is far more than that of other directions, resulting in a large number of vehicles queuing and delays in a specific direction, and a waste of traffic in other directions. The power is not conducive to the full utilization of the overall time and space resources of the intersection. [0003] Variable directional lane means that the driving dire...

AI Technical Summary

Problems solved by technology

[0005] At present, in the field of traffic planning and design, the requirements for setting the length of the general entrance widening section and gradient section are relatively specific. , the application of relevant standards and specifications often fails to achieve a good setting effect. For the approach road using the variable guiding lane system, setting a reasonable length of the widening section of the entrance road (that is, the length of the variable guiding lane) can make the vehicle enter the intersection smoothly entrance road

[0006] The optimal setting of the length of the variable guiding lane is an important part of the efficient operation of the variable guiding lane system. The design of the variable guiding lane is too long, which will cause inconvenience to vehicles changing lanes, and even cause violations and illegal driving; the variable guiding lane The short design increases the arbitrariness of vehicles changing lanes. Before and after the steering function of the variable steering lane changes, it is easy to increase the mutual disturbance between vehicles and cause unnecessary confusion at the entrance.

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