HAZMAT CDL Practice Test 2025 - Free CDL Practice Questions and Study Guide

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Question: 1 / 400

When loading cylinders of compressed gas, what is the requirement if there are no racks available?

Cylinders must be loaded flat

Cylinders may only be loaded upright

Cylinders must be secured lying down or upright

The correct response emphasizes that cylinders of compressed gas must always be secured, whether they are positioned lying down or upright, to prevent movement during transport. Proper securing is critical for safety reasons, as unsecured cylinders pose a significant risk of falling and causing potential leaks or explosions if the cylinder were to be damaged.

Choosing to secure the cylinders both lying down or upright provides flexibility depending on available space and the type of vehicle being used. It also ensures that the cylinders are maintained in a stable position that minimizes the likelihood of them shifting or toppling over while driving, which is essential to adhere to safety standards in hazardous materials transport.

While other options may suggest alternative methods of loading without ensuring safety, the requirement to secure both positions is the safest practice.

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Cylinders must be left outside the vehicle

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