The checkpoints include those at Army headquarters, the Civil Service Commission opposite Government House, Mor Chit Skytrain Station, Central Ladprao department store, Suvarnabhumi Airport, On Nut Road and Seacon Square department store.
Meanwhile, Athikom Intuputi, secretary-general of the Office of Judiciary, said safety measures at the Ratchadapisek Court compound had been strengthened following the hospital attack on Monday.
Cars entering and exiting the compound would be checked, he said.