The following section is inserted after section 20:
“21 Distance and supplementary licences for certain motor vehicles become invalid 1 month after road user charge rate increased
“(1) This section applies if a road user charge rate specified in Schedule 3 is increased under section 20 or by any other Act.
“(2) Despite any other provision of this Act, a distance licence or supplementary licence
issued for a motor vehicle whose gross laden weight is more than 3.5 tonnes beforefor a motor vehicle whose gross laden weight is more than 3.5 tonnes issued before the increase comes into force is no longer valid after the expiry of 1 month from the date of the increase.”