What identifies the boundary of a restricted area on the airfield?

The boundary of a restricted area on the airfield is identified by a solid red line. This specific marking is used to denote areas where access is limited or controlled, usually for safety and security reasons. The solid red line serves as a clear and visible cue to drivers and personnel that they must not enter the area without the proper authorization or clearance.

Understanding the significance of this marking is crucial for ensuring safety on the airfield. It helps to prevent unauthorized access to sensitive zones, which could include areas that are hazardous or under specific operational control. Recognizing and adhering to the boundaries marked by solid red lines is a fundamental aspect of airfield driving regulations, ensuring that all personnel are aware of restricted areas to maintain safety and security protocols.