Power to prohibit entry into or departure from Singapore
6.  Notwithstanding anything in these Rules, where a person driving a motor vehicle has contravened, or is reasonably suspected by the Registrar or an authorised officer to have contravened, rule 3(2) or 5(4)(d), the Registrar or authorised officer may prohibit such person from driving the motor vehicle past an immigration clearance point into or out of Singapore until such person has obtained a toll coupon appropriate to the vehicle.