In this Act, except as otherwise expressly provided or unless the context otherwise requires—
“the Act of 1984” means the [1984 c. 27.] Road Traffic Regulation Act 1984;
“the Act of 1990” means the [1990 c. 8.] Town and Country Planning Act 1990;
“the Act of 1991” means the [1991 c. 40.] Road Traffic Act 1991;
“authorised officer” means an officer of a participating council authorised by the council in writing to act in relation to the relevant provision of this Act;
“the Commissioner” means the Commissioner of Police of the Metropolis or, in the City of London, the Commissioner of the City Police;
“the fire authority” means the London Fire and Civil Defence Authority;
“participating council” means the common council of the City of London and the council of any London borough other than Tower Hamlets; and “borough” and “council” shall be construed accordingly;
“penalty charge” has the same meaning as in section 66 of the Act of 1991;
“road” has the same meaning as in section 142 (1) of the Act of 1984;
“special parking area” means a special parking area designated by an order made by the Secretary of State under section 76 (1) of the Act of 1991;
“traffic sign” has the same meaning as in section 64 (1) of the Act of 1984.