And some of the commuters have told ZNBC News in Kitwe that the upward adjustment in bus fares was expected following the increase in fuel prices last month.
On Wednesday bus operators on the Kitwe-Lusaka route have increased bus fares between eight and ten Kwacha following the recent fuel increment announced by the Energy Regulations Board.
Euro-Africa Bus Services and Power Tools Logistics increased their bus fares by ten Kwacha while Mazhandu Family Bus Services has increased by eight kwacha.
These increments were however beyond the five kwacha recommended by the Bus and Taxi Owners Association of Zambia as contained in their latest fare chart issued on July 15th in Kitwe.
And some passengers traveling to Lusaka complained that the ten Kwacha increment is too much for them to bare.
But Road Transport and Safety Agency Senior Manager for Public Relations Mercy Mwila told ZNBC that the increments are illegal.
Mrs. Mwila says stakeholders in the transport sector have not finished discussions on the matter and its unfair for transporters to effect a unilateral increment.
And Competition and Consumer Protection Commission Northern Region Chief Investigator Patrick Chengo has called on all stakeholders in the transport sector to consider the plight of the passengers.
Transport and Communications Minister Yamfwa Mukanga also maintained that any increase in bus fares will be illegal.