A total of 87 yellow-top vehicles may eventually be allowed to operate in the specified Phuket City area using the non-negotiable standard fare of 30 baht per person, officials said.
So far five yellow-tops had taken to the roads with 25 more now approved. They were all the Suzuki brand, a meeting of about 60 drivers was told at the Transport Department HQ in Phuket City.
Other vehicles may be required to undertake modifications that could cost 20,000 to 30,000 baht, the meeting heard. Drivers at the meeting accepted the cost.
Two vehicles have already been pulled over in Patong and the drivers each fined 5000 baht for exceeding the yellow-top boundary, the gathering was told.
A second offence will bring those drivers a 10,000 baht fine and suspension of their registration.
Using the once-illegal tuk-tuks only in Phuket City and only at the 30 baht fare is a compromise that appears to have been accepted by most of the drivers so far.
The drivers have another 180 days to complete registration.
Governor Nisit Jansomwong said that the service had the potential to fill the need for a low-cost service for tourists in the island's east coast capital.
Local residents are also expected to use the service, given the 30-baht per person set fare.
People who have problems with drivers are advised to call the 1584 universal complaints number or go to a police station.