http://ColonialToyotaCT.com 888-404-6925 The Star Safety System in the Toyota Siena includes Enhanced Vehicle Stability Control, Traction Control, Anti-lock Brake System, Electronic Brake-force Distribution , Brake Assist and Smart Stop Technology. At speeds greater than five miles per hour, when the accelerator is depressed first and the brakes are then applied firmly for longer than one-half second, Smart Stop Technology is designed to help the driver bring the vehicle to a complete stop.