I havne't tried with getting units to follow a road, but I have tried to get tanks to back up 5-10 meters (I guess that number over near the minimap are meters to keep tab of the distances) to be better concealed but still able to fire at the enemy, so ofcorse I expect them to back up, but they kept turning around and exposing the rear to the enemy, this is one thing I think you should look into, theres nothing more frustrating that losing that tank, just becorse the driver are too lazy to put it in reverse gear.
Otherwise it seems to work fairly well when you keep the moving orders to short distances.