The Secretary of State may by order (an "exemption order")—
Authority under subsection (1)(a) or (b) may be for—
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
After consulting the Disabled Persons Transport Advisory Committee and such other persons as the Secretary of State thinks appropriate, the Secretary of State may—
The Secretary of State may make an exemption order subject to such conditions and restrictions as are specified.
"Specified" means specified in an exemption order.
Section 207(2) does not require an exemption order to be made by statutory instrument; but such an order is as capable of being amended or revoked as an order made by statutory instrument.