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When emergency or failure occurs of the car on the highway,start the guardrail button,the warning device of led projection will begin flashing; the guardrail warning lights start flashing yellow warning before the 100 meters,approximately 50 meters will be displayed in red alert failure,and will be led warning light is projected onto the ground.
*Warning clear day or night the effect is obvious.
*The power of guardrail apparatus power from pressure-sensitive storage, drove through the sense of road-pressure storage which produce power.
*Environmental power source.
*it can alert other drivers in front the 150 meters .
Overseas Chinese University