Detailed Work Activity Monitor traffic signals. Inspect locomotives or other railroad equipment. Operate locomotives or other rail vehicles. Communicate with others to coordinate vehicle movement. Signal others to coordinate vehicle movement. Connect cables or electrical lines. Connect hoses to equipment or machinery. Measure the level or depth of water or other liquids. Receive information or instructions for performing work assignments. Review work orders or schedules to determine operations or procedures. Monitor vehicle movement or location. Control equipment that regulates vehicle traffic. Climb ladders or vehicles to perform duties. Maintain locomotives or other rail equipment in good working condition. Position material handling equipment. Record operational or production data. Record service or repair activities.