DENVER (CBS4)– An RTD bus driver arrested for allegedly driving a bus with passengers after drinking is facing a felony charge in addition to DUI charges.

Darren Pettee was arrested Monday at 9th and Clermont. He’s a contract employee who was driving an RTD bus at the time.

Darren Pettee (credit: Adams County Sheriff's Office)

Darren Pettee (credit: Adams County Sheriff’s Office)

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A passenger called RTD to report Pettee driving recklessly.

Police said Pettee took a breathalyzer which resulted in a 2.11 reading.

Pettee appeared in court on Friday where he was charged with a third DUI offense and a felony charge of endangering public transportation.

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“But as serious as a DUI is for any citizen, it’s even more serious when the allegation involves a bus driver who was entrusted to the safety of people on that bus,” said Denver District Attorney’s Office spokewoman Lynn Kimbrough.

Pettee told investigators that he thought he drank a half-gallon of vodka the night before he was arrested.

“It’s a class 3 felony alleging his actions had the ability to endanger people while driving that bus while drunk,” said Kimbrough.

“I don’t know of a similar incident happening in the history of RTD. This is very serious,” said RTD spokesman Scott Reed.

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Pettee has had two prior DUIs but because they were more than 15 years ago they were not considered when he was hired as a bus driver.