Mayor Thomas Koch on Tuesday said that he ordered full-time staffing for the fire department’s vehicle Rescue One beginning last Friday night. Rescue One carries specially-trained firefighters and the tools needed to respond to major incidents and emergency calls such as car accidents, building collapses and high-angle rescues.

Rescue One, based out of the department’s headquarters on Quincy Avenue, has been manned on a part-time basis since 2003, when the city took it out of full-time service as part of budget cuts.

“I think with all we have going on in the city, with the new construction and obviously we’re growing, it makes sense to have it in full-time,” Koch said.

For years, the Quincy firefighters’ union has been calling for the full-time restoration of Rescue One, a truck manned by two firefighters and an officer.

Quincy Fire Chief Joseph Barron said more firefighter training and gradual staff increases in recent years have put the city in a position to activate Rescue One 24 hours per day. As a result, 39 firefighters will be on-duty at all times across the city, an increase from 36.

Rescue One adds to the city’s fleet of eight engines and three ladders in service at all times.