What colors are legal for led emergency warning lights that are used in usa

As we know, DOT certification is a must for car led lights that are installed onto vehicles that run on express highway in USA. For LED emergency warning lights, there are some legal requirements in terms of flashing speed,flashing patterns. The legal colors for LED emergency warning lights vary by state in USA.

Basically, the following colors are most common in the market. Red color is often used for fire trucks and ambulances. Blue color is typically used by law enforcement vehicles, such as police cars. Amber color is often used by emergency vehicles and other rescue vehicles and tow trucks.White color is often used in combination with flashing red or blue lights. Green color is sometimes used by volunteer firefighters or other emergency responders.

It is important to note that some states may have additional regulations regarding the use of emergency warning light. Except the above-mentioned colors, you cannot adopt any color you like freely to the led emergency warning lights that will be used on any vehicles in usa.