Highway exit downgrade ramp inducing system and design method

Abstract

The invention relates to the technical field of road traffic safety, in particular to a design method of a highway exit downgrade ramp inducing system. The highway exit downgrade ramp inducing systemcomprises multiple low frequency single-layer linear inducing marks, multiple low frequency multi-layer linear inducing marks, a medium frequency yellow light-reflective aluminum plate, continuous high frequency cat eye road studs, multiple anti-collision buckets and a light-reflective vibration mark line, wherein the multiple low frequency single-layer linear inducing marks are arranged behind anexit ramp nose guardrail; the multiple low frequency multi-layer linear inducing marks are arranged behind the exit ramp nose guardrail; the medium frequency yellow light-reflective aluminum plate isarranged on an exit ramp left side guardrail; the continuous high frequency cat eye road studs are arranged on a beginning lane edge line of an exit ramp deceleration lane; the multiple anti-collision buckets are arranged in the position, close to the internal side of a guardrail, of the nose end of the exit ramp; the light-reflective vibration mark line is arranged on the edge line of an exit ramp lane; the single-layer linear inducing marks, the multi-layer linear inducing marks, the yellow light-reflective aluminum plate and the cat eye road studs are correspondingly arranged to form multi-frequency active inducing vision information; the arranging ending positions of the single-layer linear inducing marks, the multi-layer linear inducing marks, the yellow light-reflective aluminum plate and the cat eye road studs are the ending cross section of a ramp curve; and the anti-collision buckets, the light-reflective vibration mark line and the guardrail are correspondingly arranged to form a passive protection facility.

Description

technical field [0001] The invention relates to the technical field of road traffic safety, in particular to a design method for a downhill ramp guidance system at an expressway exit. Background technique [0002] The ramp is a connection channel set up to meet the traffic needs of other connecting roads under the characteristics of ensuring the closure of the expressway, and it is the only road for the transformation of expressway to local road traffic. Expressway traffic safety is a major problem in road traffic safety, but accidents frequently occur on the exit ramp of expressway. [0003] According to domestic and foreign statistical research on highway traffic safety accidents, the number of accidents on off-ramps accounts for about 40% of the total number of traffic safety accidents on expressways, and the main manifestation of off-ramp accidents is: hitting structures (about 50%), vehicle rear-end collision (about 20%), vehicle overturning (about 20%). During the pr...

AI Technical Summary

Problems solved by technology

Most of the domestic highway exit ramp traffic safety improvement measures are based on speed control deceleration measures and passive protection guardrail anti-collision measures, lacking a systematic improvement principle based on driver safety needs

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