Under almost every street are networks of:
- Water pipes
- Electrical systems
- Internet cables
- Gas lines
- Drainage tunnels
- Communication infrastructure
Colored markings help workers navigate this hidden world safely without causing damage that could affect thousands of people.
So next time you spot a blue line painted on the street, you probably wonāt ignore it anymore.
What once looked like random paint may actually be part of a much larger system quietly helping cities function every single day.
And honestly⦠most people have no idea what it means until someone finally explains it.