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Some of the most common warning signs are the following. Most common warning sign sahpes designs. Diamond shaped with yellow background and black border. Triangular with red border and white background. Triangular with red border and yellow background. Less common designs. Diamond shaped with orange background and black border.
The Warning Sign category provides signs that advise motorist to proceed with caution because of impending events or potentially hazardous conditions on or adjacent to a street or highway ahead. Potential hazards include lane obstacles, road conditions, and wild or farm animals crossings.