The materials this truck are carrying seem to be adequately secured. Unfortunately, the same can’t be said of the 2 gentlemen riding in the back, both of whom are one good jolt away from being splattered on the road.
The moral: All employees riding in or on equipment must be properly restrained, using proper seats and seatbelts. This applies to ALL equipment, including but not just off road vehicles, grading equipment and onsite transport such as golf carts.