When stopping a truck on an uphill grade, what is a good practice to follow before moving it again?

Using the parking brake to hold the vehicle is the best practice when stopping a truck on an uphill grade. This measure prevents the vehicle from rolling backward when you prepare to move it again. The parking brake provides additional security, especially on inclines, where gravity could lead the truck to descend back the slope if it is not properly secured.

Engaging the parking brake ensures that even if you need to shift into gear to go forward, the vehicle remains stationary until you are ready to move. This is crucial, as the weight of a truck can make it difficult to control if it starts rolling backward, which could lead to accidents or difficulty in regaining control.

While checking traffic before proceeding and turning the steering wheel away from the curb are important safety measures in various scenarios, they do not specifically address the critical need for securement on a grade. Shifting into neutral and releasing the brake, on the other hand, could lead to unintended movement of the vehicle. Hence, using the parking brake is the most effective way to ensure safety and control before moving the truck again on an uphill grade.