What is a common restriction listed on stacker safety notices regarding passengers?

A common restriction listed on stacker safety notices regarding passengers is that no passengers are allowed. This guideline is in place primarily to ensure the safety of both the operator and any potential passengers. The operation of stackers requires the full attention and focus of the operator. Allowing passengers increases the risk of distractions, which can lead to accidents or injuries.

Moreover, stackers are not designed to transport additional individuals, and having extra weight or movement on the vehicle can compromise its stability and handling. By prohibiting passengers, the safety notice aims to mitigate the chance of injury to anyone not trained or authorized to operate the equipment. Safety regulations are strict about maintaining a clear and focused operational environment, which further underscores this restriction.