Which of the following vehicles is not allowed during the road test?

The correct answer indicates that self-parking vehicles are not permitted during the road test. This is primarily due to the fact that self-parking technology can take over the driving process, which does not accurately demonstrate a candidate's ability to control the vehicle manually. The purpose of the road test is to assess a driver's skills in handling the vehicle, making decisions on the road, and safely executing maneuvers without automated assistance.

Standard vehicles, utility vehicles, and electric vehicles are generally permitted during the road test since they rely on the driver's input and skills. Each of these vehicle types can provide an adequate platform for evaluating driving proficiency, as they require the driver to engage proactively with the driving tasks. This aligns with the requirements for demonstrating the ability to navigate traffic, obey traffic laws, and respond to dynamic driving conditions.