I would say that the cart is transporting... we need to look at the context, is it a translation or a transport? Sorry for jumping in without understanding, if you ignore me, I will understand
Added 3 minutes ago
something more specific is needed, in my opinion, "to transport a caravan" is also strange, you can transport a wardrobe on a caravan, but you can only send a caravan
Added 1 minute ago
and I also seem to have made a mistake... "on a caravan" is incorrect, it should be "with a caravan"
welcome 
UPD: while I was thinking, I came up with a more precise way to express it (maybe
). it's "we can't move the caravan to the city" from the roadside, conditionally, or it's "the caravan can't transport creatures to the city" from the dwelling. something like that. what exactly and who can't 
UPD2: although again, as you said, we "send" a caravan, and don't help it "move"... or... aaaaaaa, to hell with it! :D enough