A dumper truck, also known as a dump truck, is a large vehicle designed for transporting and unloading heavy materials like sand, gravel, or dirt. Because of its size and weight, it can have a significant impact on the roads it travels on.
When we say that dumper trucks are 'so big and heavy,' we mean that they are usually much larger than standard cars or even delivery trucks. This size means they need more space on the road, so when they're on the street, they can block traffic, making it difficult for other drivers to get by.
Additionally, their weight can cause damage to the asphalt. Asphalt is the material used to create roads, and while it’s strong, it has a limit to how much weight it can handle. When very heavy trucks drive over it repeatedly, especially if they're loaded with dirt or rocks, they can create potholes or cracks in the surface. This is why some streets have weight limits to protect the road from damage.
So, in summary, dumper trucks can block traffic because of their size and can damage the asphalt due to their heavy loads. This makes them important to consider when planning road use, especially in busy areas.