Thailand raises Si Rat–Outer Ring tolls from 15 December

BANGKOK — 15 September 2026, Thailand’s Ministry of Transport has announced new toll rates for the Prachimrathaya Expressway, also known as the Si Rat–Outer Ring Road Expressway, with the higher rates taking effect from 15 December.

The announcement was published in the Royal Gazette on Monday following approval by the Expressway Authority of Thailand (EXAT) board at its meeting on 14 July.

Under the new Transport Ministry regulation, the Prachimrathaya Expressway will remain a toll road, with rates set under the Expressway Authority of Thailand Act.

The new regulation will replace the previous 2021 announcement governing tolls on the Si Rat–Outer Ring Road Expressway.

For motorists using the Prachimrathaya Expressway to connect to the Si Rat Expressway and the Chalong Rat Expressway, tolls will be collected at the Bang Sue 2 toll plaza.

The new rates are:

Vehicles with up to four wheels: 80 baht per vehicle, up from 65 baht
Vehicles with more than four but no more than 10 wheels: 130 baht, up from 105 baht
Vehicles with more than 10 wheels: 185 baht, up from 150 baht

The Si Rat Expressway covers the Chaeng Watthana–Bang Khlo and Phaya Thai–Si Nakharin routes.

The Chalong Rat Expressway covers the Din Daeng–Tha Ruea, Bang Na–Tha Ruea and Dao Khanong–Tha Ruea routes.

The regulation was signed on 27 August by Transport Minister Phiphat Ratchakitprakarn and will come into force on 15 December 2026.