(1) A provision of part 12 (Restrictions on stopping and parking) does not apply to the driver of a police vehicle or emergency vehicle if, in the circumstances—
(a) the driver is taking reasonable care; and
(b) it is reasonable that the provision should not apply.
(2) A provision of part 12 does not apply to a driver who is an authorised person driving a vehicle in the course of their duty as an authorised person if, in the circumstances—
(a) the driver is taking reasonable care; and
(b) it is reasonable that the provision should not apply.