When does an original driver license expire for an applicant over 21?

An original driver license for an applicant over 21 years of age in Utah expires on the applicant's birthday eight years after it is issued. This policy helps ensure that driver's licenses are renewed at regular intervals, which is crucial for maintaining accurate records and ensuring that drivers continue to meet the necessary legal and safety standards over time. The eight-year validity period provides a balance between the need for identification and the administrative practicality of renewals, allowing individuals to have a reasonably long span of time without needing to renew their license frequently.

The other options either suggest expiration periods that are too short or unrelated conditions, which do not align with Utah's licensing regulations for adults.