A safety prompting device and prompting method for a ramp vehicle to merge into an arterial road

Abstract

The invention relates to the technical field of traffic safety facilities, and discloses a safety prompting device and a prompting method for a ramp vehicle to merge into a main road. The device includes a microprocessor, a millimeter-wave radar for detecting the speed of the ramp vehicle and the distance between the ramp vehicle and the radar, and a display screen for real-time display of the safety of the ramp vehicle merging into the main road; the millimeter-wave radar The output terminal of the display screen is electrically connected to the I / O input terminal of the microprocessor, and the input terminal of the display screen is electrically connected to the I / O output terminal of the microprocessor; the millimeter wave radar is installed at the end of the acceleration section where the ramp enters the main road On the bracket, the detection face of the millimeter-wave radar faces the acceleration section; the display screen is installed below the millimeter-wave radar. The selected safety evaluation index is the TTC value after adding the speed factor.

Description

technical field [0001] The invention relates to the technical field of traffic safety facilities, in particular to a safety prompting device and a prompting method for a ramp vehicle to merge into a main road. Background technique [0002] A ramp is a transition section for a vehicle to enter a high-speed zone from a low-speed zone. When a vehicle enters the main road through the ramp, the driver needs to obtain the traffic information behind the vehicle from the rearview mirror or the window glass, and make a safety judgment to avoid When merging into the main road, it collided with the car behind, causing traffic accidents such as rear-end collisions. In the design of existing expressway ramps in my country to avoid such traffic accidents, the design length of the ramp and the visibility of the driver to the rear vehicles are mainly considered; On the one hand, when merging into the main road through the ramp, the driver seldom pays attention to the vehicles behind, and th...

AI Technical Summary

Problems solved by technology

In the design of existing expressway ramps in my country to avoid such traffic accidents, the design length of the ramp and the visibility of the driver to the rear vehicles are mainly considered; On the one hand, when merging into the main road through the ramp, the driver seldom pays attention to the vehicles behind, and the acceleration time on the ramp is too short, and merges into the main road before accelerating to a safe speed, resulting in a potential accident risk; on the other hand, The intelligent transportation infrastructure at the ramp intersection is not perfect, and many drivers lack subjective judgments on the safety of such situations, or the judgment error is relatively large, and the existing road section does not consider whether it is safe for vehicles on the ramp to merge into the main road.

This has brought great inconvenience to the driver's safe travel.

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