Regulation 18 Smoke-free vehicles: signs
(1)
The driver, operator and person who is concerned in the management of a vehicle which is treated as a smoke-free vehicle by virtue of regulation 15(2) must make sure that a sign is displayed in the vehicle in accordance with paragraph (2).
(2)
The sign must contain a legible graphic representation of a burning cigarette enclosed in a circle with a bar across the circle which crosses the cigarette symbol.