Regulation 4 Imposition of penalty chargesI1

the vehicle has been used or kept on a road in the charging area to which the scheme applies;

the vehicle falls within a class in respect of which a charge is imposed by the charging scheme;

the road is a road in respect of which a charge is imposed by the charging scheme;

events have occurred by reference to the happening of which a charge is imposed by the charging scheme; and

the charge has not been paid in full within the time and in the manner in which it is required by the charging scheme to be paid.

the release of a vehicle from an immobilisation device fixed to it in accordance with regulation 11;

the removal of a vehicle in accordance with regulation 12;

the storage and release from storage of a vehicle so removed; or

the sale or destruction of a vehicle so removed.

is to be reduced by the amount or proportion and to the sum specified in that behalf in the scheme if it is duly paid within such shorter time as is so specified; and

is to be increased by the amount or proportion and to the sum so specified if not duly paid before the end of the relevant period as defined by regulation 17(2) or (3), as the case may be, of the Enforcement Regulations.