AZ HB2059

Establishes "derestricted speed zones" on designated state highway segments where no maximum speed limit applies to non-commercial vehicles between 30 minutes before sunrise and 30 minutes after sunset, with an 80 mph limit during twilight periods

Sets the maximum speed limit at 80 mph on interstate highways outside urbanized areas with populations of 50,000 or more, replacing the current 75 mph limit

Requires a one-year pilot program on Interstate 8 before expanding derestricted speed zones to other highway segments

Mandates annual safety audits comparing crash, injury, and fatality rates before and after derestricted zone designations, with reports submitted to legislative leadership

Imposes civil penalties of at least $500 for first violations and $1,000 for second violations within one year for failing to comply with derestricted zone driving requirements, including staying in the right lane except when passing