Railcar Use
A different type of dual-clutch transmission has been used in some railcars. The two clutches are placed one on the gearbox input shaft and the other on the gearbox output shaft. When a gearchange is to be made, both clutches are disengaged simultaneously and a brake is applied inside the gearbox. The gearchange is made with all gears stationary, so no synchronizing mechanism is needed. After the gearchange, both clutches are re-engaged. There would be a significant break in transmission so this system would be unsuitable for shunting locomotives.
Read more about this topic: Dual-clutch Transmission