Signal intersection

Abstract

The invention relates to a signal intersection. The signal intersection comprises a cross passage and four roadways, wherein the four roadways are respectively connected with four exits of the cross passage; each roadway comprises an entrance way and an exit way; each entrance way is adjacent and parallel to the corresponding exit way; the entrance way of each roadway communicates with the exit way of the corresponding adjacent roadway through a turning way; each turning way is located on one side of the cross passage; in each roadway, a left-turn entrance is arranged on one side, close to the corresponding exit way, of the corresponding entrance way; a waiting zone for left-turn cars is arranged on one side, close to the cross passage, of each entrance way, and is close to the corresponding exit way; and one side, away from the cross passage, of each waiting zone for left-turn cars, communicates with the corresponding left-turn entrance. Compared with the prior art, the signal intersection disclosed by the invention realizes that a car can complete turning left within the range of the intersection without the need of making a long-distance detour, so that delay time is saved, and cars can pass the intersection safely, smoothly and efficiently.

Description

technical field [0001] The invention relates to the technical field of urban road traffic, in particular to a signalized intersection. Background technique [0002] Many large cities have implemented no-left traffic management for multi-phase signalized intersections with heavy traffic volume and serious congestion, canceled the special left-turn phase, and changed the special left-turn lane to a straight lane. Conflicting advantages, it overcomes the disadvantages of small multi-phase green-to-signal ratio, long time loss in switching phases, and low vehicle traffic efficiency. It also transfers the left-turn traffic pressure to the downstream section. The traffic capacity of the intersection is doubled compared with the multi-phase signal control, which is enough to make the seriously congested intersection unimpeded, and it is a low-cost and fastest effective technical congestion control method. [0003] However, implementing the prohibition on the left with the existing...

AI Technical Summary

Problems solved by technology

[0004] 1. It only takes more than ten seconds for the vehicle to turn directly to the left, but it usually takes a few minutes to make a detour to turn left by Yuanyin. This is not only a large time delay, but also takes up limited road space-time resources and increases the traffic pressure on the downstream section;

[0005] 2. Left-turning vehicles have to change lanes many times during the detour process, and interweave with other vehicles on multiple lanes, resulting in multiple merges and diversions, which will inevitably interfer

Images