After establishing residency, how many days are out-of-state registration plates and driver's licenses recognized in most states?

In most states, after establishing residency, out-of-state registration plates and driver's licenses are generally recognized for a period of 30 days. This timeframe allows new residents to complete the process of obtaining in-state vehicle registration and a driver's license. The 30-day window serves to accommodate individuals as they transition their documentation to comply with state laws and ensures they are given a reasonable period to adjust their legal standings after moving. Some states may have different rules, but the common understanding across many jurisdictions falls around the 30-day mark, making this the correct answer.