Many commercial vehicles are larger, heavier and longer than other vehicles on the road. The extra size, weight and length affect the way these vehicles move, especially around turns and while backing up. Shorter vehicles tend to have smaller turning circles, and vehicles with shorter turning circles can make tighter turns. Some buses have a conventional configuration in which the driver’s seat is positioned behind the steering axle. However, other buses are forward-control vehicles in which the driver’s seat is in front of the steering axle. This affects both the vehicle’s turning radius and the driver’s viewpoint when turning. When driving a forward-control vehicle, you must start your turn at a slightly different point on the turning path than when you’re driving a vehicle with a conventional configuration.