The latest vehicle to join the Boston police fleet is not a squad car, van, or motorcycle. It’s a brand new ice cream truck.

Mayor Martin J. Walsh, Police Commissioner William B. Evans, and other officials unveiled the truck Monday at a news conference at police headquarters in Roxbury. It will be used as a part of “Operation Hoodsie Cup,’’ which has handed out some 120,000 free ice cream cups since its 2010 debut.

“When you think about community policing . . . you think about relationships on the street,’’ Walsh said. “This is a way to have the police and young people interact in a positive setting.’’

The new truck, adorned with colorful balloons and a new “Boston Police’’ decal, cost $89,000 and will be driven by community service officers through September.

On Monday, Walsh and Evans passed out frozen treats — donated by dairy company HP Hood — to children attending sports camp at the Tobin Community Center.

“Oftentimes, there is this stigma between police officers and the community,’’ said John Jackson, the center’s administrative coordinator. “This is a great way to bridge the gap.’’

Police planned to use the ice cream truck during National Night Out stops Monday and Tuesday, when Walsh and Evans visit several neighborhoods to strengthen ties between residents and law enforcement.

The fleet’s older ice cream truck will be retired.

Miguel Otárola can be reached at miguel.otarola@globe.com.