A Railway driver usually begins his career as a diesel or electric assistant driver, where his job is mainly to check the state of the locomotive, help with all the auxiliary equipment as needed, and to call out the aspects of the signals. ALP with minimum 2 years of service as Diesel Asstt. /Electric Asstt. and 60,000 Kilometer running experience is required for the promotion to the post of Loco-Pilot (Goods). An assistant driver works as an assistant on goods trains, then on passenger trains, and finally on express trains. It takes at least 8 or 10 years for RRB ALP Career Progression, usually more, before an assistant driver works up the ranks to become the driver for a Rajdhani or Shatabdi train.