1A prohibition on the use of the car park for goods vehicles (as defined in section 192 (1) of the [1988 c. 52.] Road Traffic Act 1988) other than those used—
(a)for the purposes of the authorised works; or
(b)by any statutory undertakers or by any local or highway authority; or
(c)by the emergency services; or
(d)in connection with the use of the Forest Recreation Ground for any purpose which would have been lawful if this Act had not been passed.