Under the U.S. Manual of Uniform Traffic Control Devices (MUTCD), adopted by most US states, a "warning sign" may be one of three colors:
Yellow -- indicates an ordinary road hazard ahead (curve, crossroad, merge, etc)
Orange -- used for temporary construction hazards (detour, lane closed, etc)
Pink -- an emergency has created a completely new hazard ahead (fire, collision, police activity ahead).
Yellow
A warning sign
It is red and white shaped like a cross.
warning
That warning sign said: WARNING! Self destruct on it.
Traffic sign Road sign Warning sign Information Visual symbol
A warning SIGN - is a sign telling of dangerous conditions ahead
Warning Sign - song - was created in 1985.
An uncontrolled railroad crossing warning sign is typically yellow with a black symbol. The sign features a graphic of a railroad crossing and may include the words "RAILROAD CROSSING." This color combination is used to alert drivers to the potential danger of an approaching train without any control measures in place.
no
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yes