Road vehicles are commonly available with a working horn and a radio or, for emergency vehicles, emergency radio chatter. When a vehicle is stationary, the brake command can be used to reverse a vehicle, while the E-brake can be used to execute sharp turns or while parked on an incline to prevent rolls down the slope. Road vehicles since Grand Theft Auto (and, similarly, ships) allow the player to accelerate, brake, steer and engage the handbrake or emergency brake (E-brake). Entry into a vehicle, be it by carjacking or otherwise, requires only a stroke of a key or button. Vehicle control has remained virtually unchanged throughout the series.
