A concrete step barrier is a wall made of cement that is used to block cars and other vehicles from driving off the road or into dangerous areas.
Imagine you are playing with your toy cars on a ramp. If you accidentally push too hard, your car might fall off the edge and crash onto the ground. This is dangerous and can cause damage to your toy car.
The same thing can happen when real cars are driving on the road. Sometimes the driver might lose control and the car could go off the road and crash. To prevent this from happening, people build walls made of cement called concrete step barriers.
These walls are usually tall and strong, like a castle wall, and they are placed along the side of the road. If a car hits the barrier, it will stop the car from going any further and keep it on the road. The concrete step barrier is important for keeping drivers and passengers safe on the road.