Originally Posted by Sehnsucht
BUT... Isn't an articulated bus a combination vehicle?
Sort of, but ... also not really? It's a relatively permanently attached section, not something easily detached in 5 minutes like a semi. As far as I'm aware, the "trailer" portion is considered part of the front half (since it can't really run by itself, if for no other reason there's no back wall, rear lighting, etc.)