In public transport, a short turn, short working or turn-back is an earlier terminus on a bus or rail line that is used on some scheduled trips that do not operate along the full length of the route. Short turns are practical in scheduling when the short-turning bus can proceed through its layover at the short turn loop, then start a run in the opposite direction, all while reducing the number of buses needed to operate all trips along the route as opposed to if all scheduled trips operated to the terminus of full-length trips.