Run-off areas are extensions to the track used for driverOK, so we all know what the driver is, right. I've always liked the description that F1 drivers are like... There's more... safety.
Located where racers are most likely to run beyond the track limits. They can take the form of a gravel trapA gravel trap is an area of gravel on the side of the track designed to slow cars down rapidly... There's more..., AstroTurf, tarmac or an escape road
Race tracks are designed to consider what happens when it goes wrong. On a purpose-built circuit, run-off areas and gravel... There's more.... Run-off areas are an alternative to catch fences, allowing the car to recover and resume racing.