All rides between the Royal Forest Department station and Wat Phra Si Mahathat will be free until the end of this year.
BTS will also dispatch more trains during the 7am to 9am and 4.30pm to 8pm rush hours to cut down on congestion.
Call BTS call centre at (02) 617 6000, visit www.bts.co.th, link to @btsskytrain on Line or download the BTS Skytrain smartphone app for more information.