Duties may include, but are not limited to the following: Inspects, tests, modifies, maintains, and repairs all signal and communication related equipment including electronic, mechanical, and hydraulic equipment including grade crossings mechanisms, switch machines, power supplies, battery systems, CCTV, surveillance cameras, display systems, and other complex machinery and equipment. The Assistant Signal Maintainer ensures the railroad signal communication facilities and systems function to support safe and efficient rail operations and comply with the specifications and regulations of the Federal Transit Administration (FTA), the Federal Railroad Administration (FRA), the California Public Utilities Commission (CPUC), and other regulatory and governing agencies.