Oregon is the first state in the country to allow resident to check "not specified" when they apply for a driver’s license, learner’s permit or identity card.
Oregon’s DMV Services said the new rule emerged after a judge last year allowed a Portland resident to legally change to a “non-binary” gender.
The DMV says it studied laws, updated their systems and worked with the courts to make sure the change followed court rules.
Lawmakers in California are considering adopting similar changes and allowing a third gender option on state IDs.