A typical circuit usually features a stretch of straight road on which the starting grid is situated. The "pit lane", where the drivers stop for tyres, aerodynamic adjustments and minor repairs (such as changing the car's nose due to front wing damage) during the race, retirements from the race, and where the teams work on the cars before the race, is normally located next to the starting grid. The layout of the rest of the circuit varies widely, although in most cases the circuit runs in a clockwise direction. Those few circuits that run anticlockwise (and therefore have predominantly left-handed corners) can cause drivers neck problems due to the enormous lateral forces generated by F1 cars pulling their heads in the opposite direction to normal. A single race requires hotel rooms to accommodate at least 5,000 visitors.