Is it true that only high-ranking officials of the country can use protocol plates?

The statement is true as protocol plates are specifically designated for high-ranking officials or government vehicles to signify their status and the importance of their official duties. These plates help ensure that vehicles carrying such officials receive appropriate attention and respect on the road, as they often have specific privileges and protections due to their position.

Protocol plates are not issued to just anyone; they are reserved for individuals such as heads of state, cabinet members, and other high-ranking officials to facilitate their official responsibilities and enhance security. The presence of these plates denotes that the vehicle is connected to important state business, justifying certain courtesies and allowances in traffic situations.

The other options, such as suggesting that it could depend on the situation or only be applicable during official events, do not align with the established regulations surrounding the use of protocol plates, which strictly limits their use to designated officials.