Expressway exit curved slope ramp sight line induction system

Abstract

The invention relates to the technical field of traffic safety of expressways, in particular to an expressway exit curved slope ramp sight induction system, which is characterized in that corresponding first-stage, second-stage and third-stage sight induction systems are respectively arranged in road section areas with speed limits of 40km / h and below, 40-60km / h and 60km / h and above; the sight line induction system comprises a high-frequency rectangular attached delineator arranged at the bottom of the guardrail, a medium-frequency combined rectangular attached delineator arranged in the middle of the guardrail and a medium-frequency warning linear induction mark arranged on the outer side of the guardrail, and the high-frequency rectangular attached delineator, the medium-frequency combined rectangular attached delineator and the medium-frequency warning linear induction mark are graded according to different speeds. The round delineators, the rectangular attached delineators and thevisual reference columns are arranged on the inner sides and the upper portions of the guardrails, so that delineator induction of a curved slope section can be improved, the sensing capacity of a driver to a curve and a longitudinal slope is enhanced, the driver is effectively warned, and the starting section, the middle portion and the ending section of the ramp are each provided with an annularlight reflection structure. And a lane indicator is arranged below the annular reflective structure so as to ensure that a driver can discover within a decision sight distance.

Description

technical field [0001] The invention relates to the technical field of expressway traffic safety, in particular to a line-of-sight guidance system for a curved ramp at an expressway exit. Background technique [0002] According to the statistics of expressway accidents in my country in recent years, about 40% of expressway accidents occurred in the area affected by the exit, and the main accident forms were rear-end collision, collision with fixed objects and rollover. When the driver enters the exit ramp, he needs to slow down, and there will be a large speed difference between the front and rear vehicles. At the same time, if the exit ramp is on a curved road section, the driver's sight distance and viewing area will be limited, making it difficult to obtain road information ahead, causing the vehicle to It is easy to collide with the vehicle in front, or hit the outer guardrail of the ramp. At night, it will be more difficult for drivers to obtain road information, and t...

AI Technical Summary

Problems solved by technology

When the driver enters the exit ramp, he needs to slow down, and there will be a large speed difference between the front and rear vehicles. At the same time, if the exit ramp is on a curved road section, the driver's sight distance and viewing area will be limited, making it difficult to obtain road information ahead, causing the vehicle to It is easy to collide with the vehicle in front, or hit the outer guardrail of the ramp

At night, it will be more difficult for drivers to obtain road information, and the risk of accidents will be higher

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