(1)A low emission zone scheme may provide for the granting and renewal, by the local authority which made the scheme, of a time-limited exemption in respect of a vehicle or type of vehicle for the purpose of section 6(1)(b), by reference to the vehicle’s use.
(2)Where a low emission zone scheme makes provision for time-limited exemptions under subsection (1), it must specify—
(a)the circumstances in which the local authority must, may or must not grant or renew an exemption,
(b)the maximum period for which an exemption may be granted (which must be no longer than 1 year).
(3)A low emission zone scheme must—
(a)provide for the granting and renewal, by the local authority which made the scheme, of a time-limited exemption for the purpose of section 6(1)(b) in respect of vehicles which enter the zone to which the scheme relates solely due to their following a signed diversion as a result of a temporary road closure, and
(b)specify the maximum period for which such an exemption is granted (which must be no longer than the length of the road closure).
(4)A time-limited exemption granted or renewed by virtue of subsection (1) or (3) is subject to such conditions or restrictions as are specified by the local authority in the grant or renewal.