Posted By Robin B Hi Mark How do the cylinders get to you? from a supplier or bought from a merchants. The supplier may be able to give you more knowledgeable advice than I. However - There are exemptions from the requirements relating to carriage of DG's. "the carriage undertaken by enterprises which is ancillary to their main activity, such as deliveries or returns from building or civil engineering sites, or in relation to surveying, repairs or maintenance in quantities of not more than 450L per package. AND not more than 333L per vehicle" ADR 1.1.3.1 (c)[Honest, it does make sense in a somewhat twisted way]. I think you dont NEED to have hazard warning diamonds but it is good practice - let the fire service know if, God forbid, the vehicle was in an accident and caught fire. Your best bet would be to find a local Dangerous Goods Safety Adviser who could give you advice for a price. Carriage of gases is outwith my normal range of goods consigned.

Posted By Stuart Nagle Mark. YES is the asnwer your looking for. If compressed gases are carried in vehicles suitable warning signs should be displayed, even for compressed air....in cylinders for BA sets... Stuart

Posted By Stuart Nagle Mike. I tnink mark was concerned with the display of signs indicating that compressed gas cylinders were carried in the vehicles, not the orange flammable/exposive plates to which you refer. As I recall, the green diamond shaped stickers have a cylinder logo on and can carry wording, for example compressed air, compressed gas ect... Stuart