THE all-new braking system brought with the VT Commodore in 1997 included a larger brake booster, bigger-diameter and thicker discs at each corner to reduce pedal effort and absorb energy during heavy use, larger callipers and a more effective park brake. Since the VX series, a four-sensor three-channel Bosch 5.3 anti-lock braking system has been fitted as standard across the range. Traction control, fitted standard to all models from Acclaim onward and available as an option on Executive, adds another channel to the ABS system.