(KRON) – A Northern California police department was patrolling city streets during a late-night DUI enforcement operation over the weekend when they pulled over a white Jaguar SUV after a traffic violation.

But the interaction was complicated by the fact there was no driver to hand a physical ticket to.

The car that was pulled over was a driverless Waymo vehicle, which San Bruno police said made an illegal U-turn.

The department contacted the autonomous vehicle company to inform them about the "glitch." This was the first time the responding officers pulled over a Waymo, the department said.

"Since there was no human driver, a ticket couldn’t be issued (our citation books don’t have a box for 'robot'). Hopefully the reprogramming will keep it from making any more illegal moves," SBPD

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