An induction system for tunnel vertical curve line of sight

Abstract

The invention relates to the technical field of tunnel traffic safety, in particular to a tunnel vertical curve line of sight induction system, suitable for expressway tunnels with a speed limit of 60-100km / h, including an uphill section, a slope section and a downhill section. In the vertical curve section of the tunnel, the induction system of the tunnel vertical curve section includes the sign 1 for turning on the high beam light set 200m before the starting point of the uphill section, the sign 2 for turning on the high beam light set at the starting point of the uphill section, and the sign 2 for turning on the high beam light set at the starting point of the uphill section Reflective sheets are added to the belt line of the side wall of the tunnel in the section and the downhill section, flexible sight-inducing columns with gradually changing heights are installed on both sides of the road in the uphill section and on both sides of the road in the downhill section, and U-shaped columns are installed in the entire vertical curve section. LED self-illuminating contour strips, fan-shaped reflective strips set on the side walls of the slope-changing section of the tunnel, and slope-changing point signs installed at the slope-changing points. The use of such segmented settings is based on driving tasks and driver human factor theory, and is easier for drivers to understand and implement.

Description

technical field [0001] The invention relates to the technical field of tunnel traffic safety, in particular to a tunnel vertical curve line of sight induction system. Background technique [0002] For the vertical curve section of the tunnel, the driver will experience rapid transitions of uphill, transition, and downhill in a short period of time. The driver's sight distance on the slope section is poor, and the special environment in the tunnel easily leads to the driver's judgment on the slope feeling. Deviation, and the vertical curve section is short, there will be a situation that the driver has entered the next section before fully adapting to the uphill section, which will cause the driver to have greater physical and psychological discomfort when driving on the vertical curve section. The transformation of the slope and slope type of the vertical curve section of the tunnel is likely to cause changes in the driver's driving psychology, and the speed of the vehicle o...

AI Technical Summary

Problems solved by technology

In terms of existing related technologies, the driver can see that there is a ramp ahead mainly by enhancing the lighting brightness of the tunnel section, which leads to high installation and operation costs, and cannot effectively reflect the slope change of the vertical curve section of the tunnel, and lacks a relatively complete induction system. , and it is difficult to apply to long-distance tunnel vertical curve sections, so there is an urgent need for a safe, effective and economical tunnel vertical curve line-of-sight guidance system

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