Round Rock man charged with impersonating officer in road rage incident

ROUND ROCK, Texas (KXAN) — A Round Rock man was charged with impersonating an officer after he was involved in a road rage incident earlier this month, according to an arrest affidavit.

Police say they received a call March 4 from a woman wanting to file a complaint against a deputy. The license plate number she provided led authorities to Brian Thomas Sullivan, 39, who did not work for the department.

The woman said Sullivan confronted her about 7:30 p.m. in the parking lot of a Speedy Stop on University Boulevard near Interstate 35 and threatened to call his supervisor and write her a ticket, the document said. The woman prompted him to call his supervisor, but he later to her he would “let it go this time.” He then went on to say he couldn’t wait to pull her over in the future and give her a ticket, according to the affidavit.

Workers at the convenience store said Sullivan apologized to them for the altercation, adding he was upset with the woman for not pulling over when he showed his badge.

During an interview with police, Sullivan denied telling the woman and store employees he was a deputy. He later admitted to detectives that he identified himself as an officer, and apologized for lying during his first interview with detectives, the document said.

Sullivan posted $7,500 bond and was released from the Williamson County Jail. provides commenting to allow for constructive discussion on the stories we cover. In order to comment here, you acknowledge you have read and agreed to our Terms of Service. Users who violate these terms, including use of vulgar language or racial slurs, will be banned. If you see an inappropriate comment, please flag it for our moderators to review.

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