Traffic sign legibility and display are good and the traffic sign shape has important relationship. In the shape of the same area, good effect and easy identification of the order is: LED Traffic Batons diamond, square, triangle, Pentagon, hexagon, octagon, circle. Provisions on the geometry of the draft international "colors and safety signs" standard is: positive triangle warning: circular said prohibitions and restrictions; square, rectangular said tip; circular pattern with slash, also said the ban. Our traffic signs the provisions of modern geometry international standard and national standard "safety" is consistent.
The triangle. Display degree is high, irrespective of light conditions, than the other shape attract sb.'s attention. Our country uses the three
Angle for warning signs geometry, using inverted triangle in the "parking way" and "slow.".
The circular. Circular display a higher degree, vision, yellow solar flashing warning light also easy to arrange text, our country will round for prohibition and indicating two marks of geometry.
The square. Including rectangular and square, its visibility, for road traffic signs geometry.
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