Railway signalling

Okay kiddo, imagine you are playing with toy trains. You have a big track set up, and lots of trains moving around. But how do you know when it's safe for a train to move and when it's not?

Well, just like how you know when it's safe to cross the street or when it's not, trains need a system to tell them when they can move and when they need to stop. That's where railway signalling comes in.

Railway signalling is a system of signs, lights, and other signals that tell the train driver what to do. It's kind of like a special language that only trains and train drivers understand. Signals are placed all along the track, and they can be different colors or shapes.

For example, a green signal means it's okay for the train to go. A red signal means stop, and a yellow signal means slow down and be ready to stop. There are also other signals, like ones that tell the train to go to a different track or to switch to a different direction.

These signals are controlled by a person called a signalman, who sits in a special tower or building near the tracks. They use a special panel to control the signals, and they communicate with the train driver to make sure everyone is on the same page.

Railway signalling is really important because it helps keep everyone safe. It makes sure that trains don't crash into each other or go where they're not supposed to. So the next time you play with toy trains, remember how important it is to have signals to tell the trains what to do!