How new feeder drivers get trained may be different from area to area, but I can give you my experience from my local. I just moved into our feeder department, and I work in a fairly large building with 3 centers, combo workers, and of course part timers. First a list is posted in all 3 centers, then one is(only when drivers are needed) posted for just combo and other fulltimers, then finally part-timers. The most senior employees who sign these lists get will get picked to go into feeders assuming the higher priority lists has been gone through(package car gets first dibs, then combo, then parttimer). When someone moves up to feeders they get one week of non productive training where they learn how to drive the tractor, hook up to trailers, and hook up sets of trailers. During this non productive week the employee is not paid, and only empty trailers are used. The 2nd week the employee goes on the call board and does one week of productive training moving live loads. After the 2nd week is complete the employee gets their shot at taking and completing the state CDL test and will not get to drive again until they pass the test. The 2nd week is a paid week, as is the first week if the employee makes it through their 30 days. I realize not every area does feeder training like this, but I can only relate to my own experiences being a relatively new driver in our local feeder department.