What restrictions should never be violated according to vehicle inspection certificates?

The correct answer highlights the importance of adhering to all guidelines and regulations set forth by vehicle inspection certificates. These certificates serve as a formal acknowledgment that a vehicle has been inspected and deemed safe for operation on public roads. They often come with specific regulations that must be followed to ensure the safety of the vehicle's operation and to protect the driver, passengers, and other road users.

Violating any restrictions indicated on these certificates can result in unsafe driving conditions, legal consequences, or penalties for the driver and the transportation authority. Adhering to these regulations is crucial not only for compliance with the law but also for ensuring the ongoing safety and reliability of school buses and other vehicles.

Other options touch upon specific aspects of operation, such as operator age limitations and weight limits, each of which is important but falls under broader compliance issues encompassed by the rule that prohibits the violation of any stated restrictions on the vehicle inspection certificates. Thus, while these restrictions are vital, the overall principle of complying with all terms indicated on the certificates encompasses them effectively.