A public weighbridge licensee or operator may refuse a request for measurement during normal trading hours only if:
(a) the weighbridge does not have the capacity to determine the measurement; or
(b) the licensee or operator knows, or believes on reasonable grounds, that a measurement determined using the weighbridge would be incorrect; or
(c) the person requesting the measurement does not comply with a request made by the licensee or operator to pay the fee for the measurement before the measurement is determined.