Which of the following must you do when driving on public roads?

When driving on public roads, it is essential to follow regulations that ensure safety and accountability in the operation of a motor vehicle. One of the primary responsibilities is to be able to demonstrate your legal right to drive when requested by law enforcement. Showing your driver's license upon demand is a legal requirement; it confirms that you are licensed to operate a vehicle and that you are adhering to traffic laws.

Carrying your driver's license while driving serves several important purposes. It can facilitate quick identification and verification of your driving privileges, helping to keep roadways safe. This practice is consistent across many states, where failing to present a valid driver's license when asked by an officer may result in penalties or fines.

In contrast to this requirement, having an international driver’s license, displaying a learner's permit, or carrying a notarized copy of your license are not necessary for all drivers on public roads, and these options do not fulfill the standard expectations of a valid driver's license representation while operating a vehicle.