Why are chock blocks required for cargo tank vehicles?

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Chock blocks are essential for cargo tank vehicles primarily to prevent accidental rolling. When a vehicle is parked, especially on an incline or uneven surface, there is a risk that it could move unintentionally if not properly secured. By placing chock blocks against the tires, they create a physical barrier that prevents the vehicle from rolling away, ensuring the safety of the vehicle and the people working around it.

This practice is particularly important for cargo tank vehicles, which can be heavier and have a higher center of gravity due to the liquid they are transporting. The added weight and potential momentum can pose significant risks if the vehicle were to roll. Using chock blocks is a standard safety procedure that helps to maintain stability and control, significantly reducing the likelihood of accidents or spills that could arise from unplanned movement.

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