What are blue lines?

Blue lines are invisible paths that help trains and buses move along their way, just like a road helps cars go from one place to another.

Imagine you're playing with your toy car on the floor. If there were invisible lines drawn on the floor, your car would know exactly where to go, it wouldn’t crash into walls or other cars. That’s kind of how blue lines work for real trains and buses!

When a train wants to move from one station to another, it follows these blue lines, which are like the road for trains. These lines are usually under the ground or on the sides of streets, and you can't see them, that's why they're called invisible paths.

Sometimes, buses also use blue lines if they’re going along a special route. It’s like having a secret map only the bus knows!

So, next time you see a train or a bus moving smoothly from one place to another, remember: it might be following blue lines, invisible paths that help them get where they're going!