What color are most traffic control devices used in work zones?

Traffic control devices used in work zones are predominantly orange because this color is highly visible and is easily distinguished from other signs and signals on the road. Orange is specifically designated for construction and maintenance work areas, alerting drivers to situations that may require caution, such as road work, lane closures, or other obstructions.

The use of orange helps ensure that these signs capture the attention of drivers, promoting safety for both the workers in the area and the road users. Other colors used in traffic control devices convey different messages; for example, red is typically reserved for stop signs and signals indicating prohibitions, while yellow indicates general caution about upcoming road hazards or changes in road conditions. Green is used for guidance signs, indicating directions or information. Each color in the traffic system serves a distinct purpose, emphasizing the importance of orange in signaling work zones.