Is it allowed to park a LPG vehicle underground in public garages? Are there any other restrictions?
All the vehicles with a LPG conversion kit installed after the year 2002 (and therefore in compliance with the Regulation ECE/ONU 67/01) can park until the first floor of underground garages, also if it communicates with a lower floor.
On the contrary, the vehicles with a LPG conversion kit installed before this date, and so they do not comply with the safety systems of the Regulation 67/01, can always park in garages just in the outside floor, not communicating with the underground floors.
The conformity to this regulation is so indicated in the car logbook INSTALLATION EQUIPPED WITH SAFETY SYSTEMS ECE/ONU 67.01. For what it concerns the transport by sea with ferryboats, the LPG vehicles have to be declared when you book your travel.
On the contrary, for air and railway transport there are no prohibitions, as for the transit in galleries, tunnels or viaducts.