The National Transport and Safety Authority on Thursday impounded more than 17 cars, whose drivers flouted traffic rules at Mariakani on the Mombasa-Nairobi highway.
Four of them, including two busses and two matatus, were operating on routes for which they had not been licensed by the Transport Licensing Board.
The drivers were taken to Mariakani law courts where most were fined Sh30,000 each. The NTSA safety officer, Mohamed Khamsin, said operating on routes illegally are some of the major causes of accidents on roads.
"The busses and one matatu were licensed to ply the Nairobi-Nyeri route while one matatu was licensed for Nairobi town service," he said.
Speaking to the Star in Mombasa town, Khamsin said drivers who operate on routes for which they are not licensed cause most of the accidents because they are unfamiliar with the routes.
One must acquire a temporary licence from the TLB to operate on a route different from the one they have been licensed for. Khamsin said it is difficult for the government to regulate traffic when public service vehicles operate on illegal routes. He said the ban on night travel has been effective. Khamsin said it has reduced accidents by a "big margin".