When a vehicle enters a tunnel, the driver should:

	make sure that entry is permitted for this type of vehicle
	adjust vehicle speed to current traffic and weather conditions, as well as to speed limits set by conventional or variable speed limit signs
	turn on their headlights
	take off their sunglasses
	tune the radio to the frequency mentioned on the sign (if any) before entering the tunnel

Inside tunnels it is prohibited to:

A. To stop or park vehicles, unless the following emergency cases occur:

	There is a generalised traffic congestion (bottleneck)
	An order was issued by the Traffic Police or authorised tunnel personnel
	An instruction was given through the traffic signalling system (red lights or  lane closure signs)
	In case of emergency but only when there is a lay-by inside the tunnel
	The driver or other vehicle passenger has an emergency health problem

Β. To make any U-turns or reverse unless ordered to do so by the Traffic Police or authorised tunnel personnel.

C. To use acoustic alarm signals, except for accident prevention.

When in a tunnel, drivers must:

	turn on vehicle headlights,
	obey signage and signalling (conventional, traffic lights or variable message signs),
	move within the specified speed limits, unless there is an emergency in the tunnel or so instructed by tunnel personnel, traffic police or traffic lights,
	keep a steady speed within speed limits,
	not change traffic lanes, to the extent possible,
	keep a minimum safety distance of 70m from the vehicle in front,
	keep a minimum safety distance of 10m from the vehicle in front in case of full immobilisation or slow moving traffic,
	turn off engine in case of long immobilisation.

When in a tunnel, drivers must observe variable message signs (variable speed limit signs, lane closure signs etc) that supersede conventional signs and traffic rules.