LTA has noted an increase in arrogant and ungrateful public service vehicle (PSV) drivers.
Authority CEO Naisa Tuinaceva said PSV drivers must change their attitude and behaviour to get customer satisfaction.
Mr Tuinaceva said their offices in the North, West and Central divisions had been inundated with disgruntled patrons complaining about the drivers' attitude.
"We receive complaints from all people, students, young people the senior citizens and some come personally to us and lodge complaints at our complaints centres and the LTA Facebook page," he said.
"We are particularly concerned because it's a human factor, it deals with the human mind and heart and we do not have the facility to deal with this kind of human behaviour.
"Taxidrivers in particular are the ones complained about a lot, followed by complaints against bus drivers.
"We are requesting all PSV drivers to remember that the most important people are the general public."