Okay, little buddy! You know when you hear a loud noise and see bright lights that are blinking? That's a fire truck with a siren and flashing lights! The siren is like a big loud horn that says, ‘We need to hurry!’
When firefighters hear a call for help, they jump into their fire truck super fast. They turn on the siren and lights to say, ‘Excuse us, we’re going to help someone!’
Other cars on the road need to pull over and make space for the fire truck to pass quickly. This is important because the firefighters need to get to where they are needed to help people and keep everyone safe.
So remember, if you hear that loud sound or see those shiny lights, it means firefighters are on their way to help. It's a sign for everyone else to move aside and let them go fast!