What is a primary advantage of using a donut roll compared to a straight roll?

Using a donut roll has the primary advantage of rolling out easier with fewer twists due to its design. The way the roll is shaped allows for a more streamlined and controlled unwinding process. This is particularly beneficial in emergency situations where time is critical and firefighters need to deploy hoses quickly and efficiently.

The donut roll minimizes friction and allows the hose to lay out in a manner that reduces kinks and twists as it is deployed. This feature is crucial in ensuring that the firefighters can rapidly connect the hose to a water supply and start operation without delays caused by having to untangle or straighten the hose.

In contrast, while aspects like ease of storage, time to load, or weight may influence the choice of hose rolls, these are not the primary advantages of the donut roll when it comes to operational efficiency during a fire emergency.