In the United States, the regulations regarding passengers on motorcycles with a learner's permit can vary depending on the state. Generally, learners permit holders are restricted from carrying passengers on motorcycles, regardless of whether there is an adult or licensed driver operating the motorcycle.
Most states require individuals with a learner's permit to ride motorcycles alone and gain experience before carrying passengers. This is because operating a motorcycle with a passenger requires additional skills and control, which may not be adequately developed by someone with only a learner's permit.
It's important to note that motorcycle laws can differ between states, so it's crucial to consult the specific regulations in your state to understand the restrictions and requirements for learner's permit holders. You can refer to your state's Department of Motor Vehicles (DMV) or equivalent agency for accurate and up-to-date information on motorcycle licensing and passenger restrictions.