In which subtitle can you find rules pertaining to license plates?

The rules pertaining to license plates are found in Subtitle A, Chapter 504. This chapter directly addresses the regulations surrounding the issuance, display, and management of vehicle registration plates. It is essential for ensuring that vehicles are properly identified on the road and that the licensing process complies with state laws. This includes various aspects such as the types of plates available, requirements for special plates, and the procedures for renewing or replacing plates.

Each of the other options pertains to different areas of vehicle regulations. For example, Subtitle B generally covers the general licensing requirements for drivers and vehicle owners, Subtitle C focuses on vehicle operators' regulations, and Subtitle D addresses other aspects of vehicle registration and titling. They do not specifically delve into the details regarding license plates, which is why the correct answer is found in Subtitle A, Chapter 504.