The Arizona Department of Transportation (ADOT) is a state agency responsible for managing the transportation system in Arizona. This includes maintaining highways, overseeing vehicle registration, and ensuring road safety. ADOT also works on transportation planning and development to improve infrastructure across the state. In addition to road management, ADOT provides services such as issuing driver's licenses and conducting vehicle inspections. The agency aims to enhance mobility and accessibility for residents and visitors, contributing to the overall economic growth and quality of life in Arizona.