What type of markings are used for overrun chevrons?

Overrun chevrons are marked with yellow to enhance visibility and safety in areas where aircraft may exceed the normal limits of the runway. The bright yellow color serves to draw attention to potential hazards, indicating zones that are not intended for regular use but are available in emergency situations when an aircraft overruns the runway. The use of yellow is standard in aviation for caution and warning indicators, making it easily recognizable to pilots and ground crews. This helps in ensuring that everyone is aware of the overrun areas and can take necessary precautions.

Other colors like blue, black, and white are typically used for different purposes in airfield marking systems, such as identifying taxiways, runway edges, and other navigational aids, but yellow specifically denotes caution and indicates the presence of potential danger.