Can someone please explain to me how a person who designs and builds bridges and person who opperates a train is the same thing?

@iamonfire696 Not quite. A conductor doesn't drive the train. The Conductor is in charge of the train. It's like the captain on a ship. People think the Captain steers the ship but hw doesn't. The helmsman/coxswain does. Engineer is both a US and Canadian term for the person actually driving it. The conductor is the person in charge of the entire operation though. His job is operation and saftey.