Adaptive driving modifications for disabled people vary widely depending on the nature of a given driver's disabilities, ranging from simple modifications to the seat of a vehicle to fully modified controls that use hand levers in place of the traditional steering wheel and pedals. Though some modifications may be simple enough to install for almost anyone, many adaptive driving modifications are designed and installed by specialists to accommodate a disabled driver's specific needs.
Adaptive driving modifications can be broadly classified as adaptations that allow better access or more comfort for disabled drivers and those that modify the controls of a vehicle to enable disabled drivers to operate the vehicle more easily. Specially modified seat cushions that provide better support to drivers with severe back injury and swiveling seats that make it easier to get in and out of the car are examples of the first type of modification. Relatively simple examples of the second type of modification include pedal extensions that allow drivers with shorter legs to easily access the pedals and left-foot gas pedals to allow drivers with only one leg to easily reach both the brake and gas.
More complex control modifications can involve fully replacing the vehicle's normal controls with levers or other hand-operated devices. In addition, some disabled drivers benefit from reduced-effort control systems that minimize the effort required to operate a vehicle's steering wheel or pedals.