Highway guardrail plate will reflect cause

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Highway guardrail every bit of distance on the signage made of reflective materials, normal straight section 50 m 1, 20 m 1 curve, ramp 5 m / a, with a very obvious warning effect, this signage surface coated with a layer of reflective rate of high fluorescent paint, can be various angles of incidence of light reflection out of the relative concentration of parallel light. In the absence of light conditions will show very dark, once there is light shot to the surface of the signage, it will shoot back in the direction from which it came. Highway in front of the role of reflective panels, road width, corner, slope at a glance!