All trucks with 10 wheels or more will not be allowed to use roads in Phuket during rush hours on weekdays.
Phuket police announced on Friday the ban of all lorries having 10 wheels or more to enter Phuket from 6am-9am and 4pm-7pm on weekdays. The new restriction begins on Monday.
The ban will not be enforced on weekends and public holidays, he added.
The new regulation is designed to ease traffic congestion on roads in Phuket, especially from Phuket Airport to downtown.
About 40,000 vehicles pile onto Phuket streets from the airport to the city during high season and 10,000 during low season.
About 230 heavy trucks travelling from Phangnga enter Phuket during morning and evening rush hours, according to the police.
Police said any lorries that needed to be on the streets during the banned periods are required to seek permission in advance.