Installs, maintains, troubleshoots, tests, and calibrates traffic signal systems, including traffic components, electrical components, relays, fuses, thermostats, load switches, circuit breakers, transformers, circuit boards, mercury switches, fans, and other components; inspects, cleans, maintains, and troubleshoots traffic signal controller cabinets, detectors, loops, conflict monitors, and other components; maintains signal head lenses, reflectors, and disconnects; wires and replaces signal heads, light bulbs, and other hardware; assembles flasher system signal heads; inspects and troubleshoots streetlights for blown fuses, bad bulbs, or other problems; opens and replaces broken pull boxes. Operates a variety of machinery, equipment, and tools associated with projects and work activities, which may include a bucket truck, utility vehicle, backhoe, jack hammer, pipe bender, arrow boards, light tower, generator, loop saw, voltmeter, loop truck, chipper, air compressor, measuring instruments, mechanic tools, hand tools, hydraulic tools, or two-way radio.