Yes? I think. If you have the correct ground units in place near the aircraft (so next to the road), they will rearm/repair.
I can’t remember the specific units off hand but if you take a look at this mission (DCS Mission Submission: Mudspike 3rd Annual Fly-In (2017) Training Mission) and the FARP near Ochimchara, there are a few units near a road (I think).
If you look at the picture included with that mission, the 3 trucks in the centre are the required ones for NATO (fuel, command and whatever the other one is).