(1) If it is a condition of an exemption that a vehicle or combination be fitted with a warning sign, a person must not use, or cause or permit the use of, the vehicle or combination unless the warning sign complies with the requirements of this regulation, the exemption and Schedule 3 .Penalty: In the case of (a) a first offence 20 penalty units; and(b) a second or subsequent offence 40 penalty units.(2) A person must not use, or cause or permit the use of, a vehicle or combination displaying a warning sign unless (a) the sign is required under an exemption; and(b) the vehicle or combination is operating in accordance with the exemption.Penalty: In the case of (a) a first offence 20 penalty units; and(b) a second or subsequent offence 40 penalty units.(3) If it is a requirement of an exemption that a warning light be fitted to a motor vehicle or combination, a person must not use, or cause or permit the use of, the vehicle or combination under that exemption unless the warning light is illuminated.Penalty: In the case of (a) a first offence 20 penalty units; and(b) a second or subsequent offence 40 penalty units.(4) If a pilot vehicle is required to have a warning light, a person must not use, or cause or permit the use of, the pilot vehicle to accompany a vehicle or combination unless the warning light is illuminated.Penalty: In the case of (a) a first offence 20 penalty units; and(b) a second or subsequent offence 40 penalty units.(5) A person must not use, or cause or permit the use of, a vehicle or combination with a warning light illuminated on it unless (a) the light is required under an exemption; and(b) the vehicle or combination is operating in accordance with the exemption.Penalty: In the case of (a) a first offence 20 penalty units; and(b) a second or subsequent offence 40 penalty units.(6) A requirement to display a warning sign or warning light as a condition of an exemption does not affect any other obligation to display a sign or light under these regulations, the Act or any other Act.