Brendan Ross (center) with father (left) and Lawyer (right)

A Yale University student has been charged with negligent homicide months after a fatal car accident that left two women injured and another woman dead, Fox 4 reports.

Ross was not under the influence of drugs or alcohol as he passed his sobriety test. The tragic incident prompted Yale University to impose several new rules, including a ban on beer kegs and use of oversize vehicles, Fox 4 reports. Students are also no longer permitted to tailgate past kickoff.

Ross was arraigned Monday. He faces a maximum of six months in prison.