Tesla Robotaxi is headed to a new U.S. state following its latest approval, which was revealed on Friday night.
Tesla has been operating its Robotaxi platform in Texas and California, with Austin being the first city where the company could test a ride-hailing platform without anyone in the driver’s seat.
First launching in Austin in late June, Tesla’s focus has been expanding its service area, its fleet of Robotaxi vehicles, and its rider population, which has grown most recently due to its public launch.
However, Tesla is also filing applications in states where these autonomous driving programs can operate, aiming to expand to all 50 states eventually. CEO Elon Musk said earlier this year that the company should be able to offer Robotaxi rides to roughly half of the U.S. population.
Alongside Texas and California, Tesla recently gained permission to test its Robotaxi in Nevada, marking the third state where it had some form of regulatory permission to perform rides using an unreleased version of the Full Self-Driving suite.
Tesla adjusts one key detail of Robotaxi operations in Austin
Now, Tesla has gained another approval in a new state, its fourth, marking a significant step in its expansion across the U.S.
In Arizona, Tesla gained regulatory approval to begin testing autonomous vehicles on public roads.
BREAKING: Tesla has officially received approval from the Arizona Department of Transportation to start testing autonomous vehicles on public roads.
Today, I confirmed directly with the Arizona DOT that @Tesla has met requirements to begin testing its autonomous vehicles in… pic.twitter.com/kjgFnKEcJF
— Sawyer Merritt (@SawyerMerritt) September 20, 2025
The vehicles in Austin and the Bay Area of California both use what Tesla has been referring to as “Safety Monitors” in the cars. During city operation in Texas, the Safety Monitor sits in the passenger’s seat. When the route takes the car on the highway, the Safety Monitor jumps into the driver’s seat.
Tesla explains why Robotaxis now have safety monitors in the driver’s seat
In California, the Safety Monitor is always in the driver’s seat.
In Arizona, Tesla will also utilize what a communication said was “Safety Drivers,” insinuating that the monitor would be in the driver’s seat. However, another line in the email states:
“Only a trained employee, contractor, or other person authorized by the company can operate or monitor the vehicles.”
It sounds as if there is the potential for the Safety Monitor to be in either seat, much like Tesla’s process in Austin. However, this is currently unconfirmed.
The new approval marks a drastic step forward for Tesla as it has received two new approvals in just two weeks. Regulatory hurdles seem to still be the biggest bottleneck for Tesla in terms of gaining permissions to operate in new states, but things seem to be moving along pretty well so far.