Loading and unloading trailers mainly, time on dock depends on length of bid, I think 400 round trip mandatory, 400 to 478 drive option no delay if don’t, and 478 up round trip hub turn you get delay pay it’s been awhile since I’ve been on dock bid really it’s in your hands some guys work every minute they can get and some avoid dock like the Plague most hubs don’t chase you down but in some cases not working dock you may be there a while sometimes you working dock Determines how fast your freight is loading and if you want to leave quicker that’s the best way to do it