The National Reform Steering Assembly (NRSA) will hand over its work to Prime Minister General Prayut Chan-o-cha on Monday ahead of its being dissolved.
Jatuporn Prompan, chairman of the red-shirt group, has been handed a one-year jail term for defaming former prime minister Abhisit Vejjajiva in speeches he made in 2009.
Traffic flowed at a slower pace than normal at Bangkok's Ratchayothin Intersection during the morning rush hour on Monday as the new school semester began.