A signal apprentice works for a rail company, learning the duties of a signal maintainer through on-the-job training and experience. As part of this apprenticeship, you work on a railway to assist a seasoned signal maintainer as they install, repair, inspect, and test signal equipment. You drive along railways and assess all signal and safety equipment at train crossings. To carry out your job responsibilities, you need an understanding of these safety systems and how to install and repair them. As a signal apprentice, you learn the skills needed to complete your job, especially those related to wiring the equipment.