The Thalugaz group announced they would protest at Victory Monument from 4pm, while the Save Bangkloi group plan a 3pm march from Rajavinit Mathayom School in Dusit district to the Natural Resources and Environment Ministry and Victory Monument.
The police expect the rallies will affect traffic on Phaya Thai Road, Phahonyothin Road, Ratchawithi Road, Asok-Din Daeng Road, Vibhavadi Rangsit Road and Din Daeng Expressway.
They advised motorists to avoid these routes and instead use Ratchadaphisek Road, Rama IX Road, Chaturathit Road, Rama VI Road, Pradiphat Road, Sutthisan Winitchai Road, Utraphimuk Expressway, Si Rat Expressway and Chalerm Maha Nakhon Expressway.