Regulation 13
General restrictions in relation to conduct in road tunnels and expressway tunnels
of Road Traffic (Expressway Traffic) Rules
Except as otherwise directed or signalled by a police officer or conforming to any traffic sign, no person shall in any road tunnel or expressway tunnel —
stop any vehicle or permit it to remain at rest except when —
lawfully required to do so;
compelled to do so by reason of accident, breakdown or emergency;
enter therein on foot;
alight from a vehicle except in an emergency or to summon assistance;
use the horn, siren, whistle or any other noise making device except in an emergency;
make any U-turn or reverse a vehicle;
change a tyre or wheel;
refuel or repair a vehicle; or
propel a vehicle by pushing it, whether manually or by other means.