Some of the physical activities performed by Light Maintainers and environmental conditions they experience are: working on or near train tracks where live high voltage equipment is present; working outdoors in all weather conditions; using ladders to climb onto and off trackways; hearing warnings (bells, whistles, and vocal); working on elevated structures; driving, loading, and unloading trucks; and lifting heavy material and equipment. Responsibilities: Light Maintainers, under supervision, install, inspect, test, alter, maintain, and repair lighting and other electrical systems in MTA New York City Transit facilities, such as subway tunnels and elevated structures, bus depots and repair shops, subway car yards and barns, and other MTA New York City Transit buildings and structures; keep records; drive motor vehicles; and perform related work.