What type of covering must be used for loose materials transported on highways?

Using a tarpaulin covering for loose materials transported on highways is crucial for safety and environmental protection. A tarpaulin, often made of waterproof and durable material, effectively prevents loose items from spilling onto the roadway. This not only keeps the road clear, helping to avoid accidents that could be caused by debris but also minimizes the risk of environmental contamination.

Materials that are left uncovered can be blown away by wind or dislodged during transport. This can lead to hazardous situations for other drivers, as well as damage to the materials themselves. The requirement for a tarpaulin covering is typically enforced by transportation regulations, ensuring compliance for safe transport practices. In contrast, metal or wooden covers may not provide the flexibility and ease of securing or removing the covering as needed, while not covering the materials would clearly violate safety protocols established for transport.