5-SURE is expanding its service to run from 9 p.m. to 1:45 a.m. seven nights a week effective on Monday, the service announced yesterday. Previously, 5-SURE service started at 10 p.m. every night.

5-SURE provides free rides to Stanford students at night, helping ensure they have safe and reliable transportation back to their housing after dark. The change comes in response to a spate of suspected criminal activity on campus, including several recent assaults and a “hot prowl” threat.

5-SURE also said it is undergoing a name change. Previously, the acronym stood for “Students United for Rape Elimination.” Now stands for “Students United for Risk Elimination.”

“The change was made due to a shift in the mission of the SURE program over the years,” the organization said in a statement. “All members of the Stanford community use the service in order to safely get across campus when they feel they may be at risk. Our mission has grown to eliminate these risks in what ways we can.”

5-SURE rides can be arranged by calling 650-725-SURE during operating hours, or at 5-sure.stanford.edu.