What must all rented or leased commercial vehicles display unless exempt by law?

All rented or leased commercial vehicles are required by law to display a sign on each side indicating for whom the vehicle is being operated. This requirement is in place to ensure that the identity of the operator is clear, which is particularly important for accountability and regulatory compliance. It helps in distinguishing the vehicle's operation, especially in commercial settings where multiple companies may be using similar vehicles.

This identification is crucial for various reasons, including enhancing safety by providing other road users with information regarding vehicle operation and ensuring that those responsible for the vehicle are easily identifiable in the event of an incident or inspection. Such visibility promotes regulatory compliance and can also assist law enforcement and other authorities in tracking and managing commercial vehicle operations.

The other options, while they may come with their own set of regulations or considerations, do not specifically pertain to what is required for rented or leased commercial vehicles under standard operations. For example, a warning label may not be universally necessary, and signage indicating the name of the leasing company may not provide operational transparency in the same manner that a sign denoting the operating entity does.