In the cabinet reshuffle, the former Petroleum and Energy Minister relinquished his portfolio and takes over from William Duma.
Duma is now the Minister for Public Enterprise and Investment.
Duban officially took up his new office on Tuesday and had a meeting with Secretary for Transport, Roy Mumu.
The secretary advised the minister on the department’s roles and responsibilities.
The Transport Department’s core role is to deal with policy matters of transport including the sea, land and air sectors.