Can someone clarify for me what differentiates the two?
I understand 16.5m is for artics and 18.75m for wagon and drag but what would, for example, a car transporter be if connected with a hitch and not a fifth wheel? Is that then a w+d as it uses the same coupling?
Would a fifth wheel car transporter be 18m because it has a low loader or does that only apply to a single deck?
If the towing vehicle is carrying the trailer then its an artic if not its a wagon and drag, there are car transporters with a fifth wheel that are a wagon and drag but thats another story to do with demounts.