A corner marshal is a racer posted trackside during a heat they are not driving in, whose job is to right crashed cars and clear the racing line, stepping onto the track only after a caution is called.
Marshalling is a safety job with a rulebook behind it. ROAR §3.12.7 is blunt: “No corner marshals or mechanics are allowed on the track during practice or racing without a caution being called,” and marshals “will wait until race vehicles come to a slow, controlled pace before entering racing area.” The BRCA’s 2026 General Rules add the kit and the etiquette — hi-vis in bright colours, with black and blue not permitted, no phones or tablets inside the track perimeter, and it is “every Marshal’s responsibility to report to race control if they feel that their post is inadequately protected.” Which round you marshal, and what happens if you skip it, is local: BRCA requires the drivers’ briefing to cover “Marshalling requirements,” so listen to it.
A marshal who misses a flipped car costs someone their race, and a marshal who steps onto a live track or looks at a phone is why both rulebooks write the rule down.