A kid-friendly explanation of how trains know when to start moving and the signals involved.
Trains are very big and can be dangerous if they don't follow rules, just like when you play a game. They need special signals to know what to do.
1. Red Signal: When the signal is red, it means 'stop.' Just like a stop sign for cars! The train has to wait and can’t move.
2. Green Signal: When the signal changes to green, it means 'go!' This is when the train can start moving again.
3. Yellow Signal: A yellow signal means 'prepare to stop' or 'slow down.' The train knows it should get ready to stop soon.
So, a train starts moving after the signal shows green! And just like you check your traffic light before crossing the street, trains check these signals to keep everyone safe!