Traffic barrier

A traffic barrier is a wall or fence that keeps cars and other vehicles from going where they're not supposed to go. Imagine you're playing with your toy cars on a track. You have a little fence, and when you crash your cars, they stay on the track and don't go flying across the room. A traffic barrier works the same way, but it's much bigger and stronger. It keeps cars from leaving the road and hitting other things like trees or buildings. They're also used to separate different lanes of traffic so cars don't cross over into each other's path by mistake. It's like a wall that keeps the cars on the right track and keeps everyone safe.