The bolt that attaches the upper part of the bicycle's fork to the lower part of the fork can break or separate and cause the front wheel to come off the bicycle. This is a crash hazard for riders.
When the elastic draw cord with a hard tip in the hood or around the neck area is pulled or caught on something and released, it can snap back, impact the face area and result in injury.
The front wheel hubs on the golf cars and PTVs can crack causing the front wheels to detach, posing a crash hazard that could result in injury or death to the user or bystander.