ELI5: Explain Like I'm 5

Railway systems engineering

Railway systems engineering is the science of building and maintaining railway systems. It is a combination of engineering and technology which involves the planning, building, operating, and maintaining of railway tracks, tunnels, bridges, and other types of infrastructure that are used to transport people and goods. Engineers must consider the cost of construction, durability, safety, and other factors when designing systems. They also must ensure that the railway is running efficiently and safely to ensure everyone's safety.