there are mostly yellow.
There are many warning signs that you are experiencing a lack of oxygen. Some warning signs can include skin that is bluish to gray in color, lightheaded feeling, and tingling in extremities such as fingers or toes.
More eye catching color.
Purple, like the beverage
Warning signs are usually a diamond shape. The color of the sign is yellow in order to caution drivers about an intersection ahead, bicyclists or wildlife that may be near the road.
there are no warning signs
Green signs are not warning signs. They are signs that tell you it is "safe" to do something.
US standard traffic warning signs are yellow background with black symbols or letters. Traffic warning signs in other countries are generally white or yellow background with a red or black border in a triangular shape. Industrial warning signs are various colors, including OSHA and ANZI standards with orange background and black lettering. A yellow OSHA or ANZI sign would mean "caution" not "warning".
The standard color for a deer crossing sign in the USA is yellow - the same color as is used for other warning signs and most yield signs. 2nd Answer: Per FHWA, yield signs in the US must be red on white in all public locations . . . CRiMCO
It depends on what warning signs that you are interested in. Many sites offer guides on how to spot the warning signs for illnesses etc. If it is to do with motoring check the highway site for details.
Early warning signs of storms and precautions
There are many warning signs of pregnancy. Some warning signs include tingling nipples, spotting, cramping, morning sickness, swollen breasts, a missed period, and/or darkened nipples.
I guess its made in that color because well its flammable and its not a good idea to play around it.. Usually the DANGER or WARNING signs are that color and its a color hard to miss.. SO they made it in red