Reduced lane and its setting method based on the design concept of narrow road

Abstract

The invention provides a curtailment lane based on a narrow road design concept. The curtailment lane is provided with three lanes, the three lanes comprise a central two-direction left-turn lane, anopposite-direction straight lane, and a same-direction straight lane, wherein the opposite-direction straight lane and the same-direction straight lane are arranged on the two sides of the opposite-direction straight lane; a clearance area is arranged on the central two-direction left-turn lane, and the clearance area arranged on the central two-direction left-turn lane is an adopted section of aroad where no vehicle is allowed to drive into prevent a left-turn or u-turn vehicle in one direction entering the central two-direction left-turn lane from the straight lane from conflicting with anopposite-direction left-turn or u-turn vehicle entering the central two-direction left-turn lane. According to the curtailment lane, an existing entirety type four-lane road is transformed into central two-direction left-turn three lanes, traffic capacity of non-motor vehicles and pedestrians are improved without reducing capacity of motor vehicles and increasing delays, road resources are improved, and the overall using efficiency of the road space is greatly improved.

Description

technical field [0001] The invention relates to a reduced lane based on the design concept of narrow roads and a setting method thereof, belonging to the field of urban road reconstruction design. Background technique [0002] The current types of lanes in my country are traditional road section forms, two-way four-lane, two-way six-lane, etc. This is because from the 1950s to the 1960s, the focus of road engineering was on the expansion of the road system and capacity rather than reduction. No matter when and where, when the traffic volume of a certain section of a two-way two-lane road increases too fast, in order to adapt the road capacity to it, the usual practice in road design is to increase the road to two-way four-lane. There was no engineering precedent in that period for prioritizing the design of three-lane roads as an alternative. [0003] Therefore, two-way four-lane roads have been the national standard from the very beginning. Some roads are built with two-w...

AI Technical Summary

Problems solved by technology

Some roads are built with two-way four-lane cross-sections to accommodate higher traffic volumes, but more roads do not have so much traffic that building two-way four-lane roads wastes road resources

[0004] Not only that, taking the two-way four-lane as an example, the traditional two-way four-lane secondary trunk road or branch road usually adopts the traffic organization mode of non-machine mixed traffic, and various types of accidents on the road are increasing, including: due to different vehicle speeds Rear-end and lateral collision accidents caused by vehicles; lateral collision accidents caused by frequent and sudden lane changes of vehicles between two lanes; rear-end collision accidents caused by left-turning vehicles parked in the inner lane; The driver of the turning vehicle is not sure whether the vehicle in front is turning left or not, and the psychological pressure caused by the inability to correctly judge the safe workshop with the vehicle in front leads to a left-turn collision; due to the lack of effective space for non-motor vehicles to create a comfortable ride Motor vehicle accidents; Pedestrian accidents due to the lack of protective devices on the road to protect pedestrians from crossing the street safely

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