In the countryside, where buses may be sporadic or even nonexistent, it is standard practice for
vans and
lorries (
camions ),
pick-up trucks (
camionettes ) and
transit-vans (
transits ) to carry and charge passengers. You may be asked to pay a little more than the locals, and you may be expected to bargain over the price - but it's straightforward enough.
In parts of the Atlas , local people run more or less scheduled truck or transit services, generally to coincide with the pattern of local souks. If you plan on traversing any of the more ambitious Atlas pistes, you'll probably be dependent on these vehicles, unless you walk.