Traction control is available on select models. The Frontier offers advanced brake controls in 4x4 models, including an electronic stability system, Hill Descent Control and Hill Start Assist. HDC allows slow hill descent without constant pressure on the brake pedal. HSA allows the driver to stop on an incline, release the brake and not roll back for two seconds as the driver's foot moves to the accelerator. Seat-mounted side-impact airbags and side curtain airbags are optional.