Road user charge to be paid during restricted hours
5. A road user charge of the appropriate amount as specified in the First Schedule shall be payable on every occasion a motor vehicle is ridden, driven or moved into a specified entry point on a specified road during the restricted hours.
Payment of road user charge
6.—(1) The road user charge shall be paid by using an ERP card with the in-vehicle unit installed in a motor vehicle.
(2) The appropriate amount of road user charge shall be debited against the stored value of the ERP card.
Driver to ensure adequate balance in stored value of ERP card
7. The driver of a motor vehicle shall ensure that the ERP card has a stored value of an amount that is sufficient to pay for any road user charge which may be incurred by him.