Newly installed Honolulu Mayor Peter Carlisle flew to Washington, D.C., last week to lobby on behalf of the city’s proposed commuter rail project.

City Council Chairman Todd Apo, Councilman Ikaika Anderson and Deputy Transportation Director Toru Hamayasu accompanied the mayor. The group left Wednesday.

They met Friday with Federal Transportation Administrator Peter Rogoff, and Carlisle returned Saturday.

Carlisle took the oath of office last week.

The former Honolulu prosecutor defeated then-acting Mayor Kirk Caldwell, engineer Panos Prevedouros and five other candidates on Sept. 18.

Meanwhile, Carlisle is carrying over at least four members of his predecessor’s Cabinet, while others are being asked to stay until Jan. 31, when permanent replacements will be named.

Carlisle’s only new appointment so far has been City Managing Director Douglas Chin, a former first deputy prosecutor.

Among those from former Mayor Mufi Hannemann’s Cabinet who are being nominated for the same roles in Carlisle’s administration are Environmental Services Director Tim Steinberger, Human Resources Director Noel Ono, Information Technology Director Gordon Bruce and Planning and Permitting Director David Tanoue.

The appointments are subject to City Council confirmation.

Paperwork listing the nominations and temporary commissions was filed Tuesday with the City Clerk.

Three Cabinet members chose not to remain: Budget Director Rix Maurer III, Community Services Director Debbie Kim Morikawa and Facilities Maintenance Director Jeoffrey Cudiamat. Acting directors are filling those positions until successors are named.