Location: Ring Road and Route 33, Suphan Buri No reassurance shield after the 33 junction. Location: Ring Road and Route 340, Suphan Buri As we get around to the south side of Suphan Buri, we’ll approach Route 340 again. Location: Ring Road and Route 340, Suphan Buri Ext left ahead for 340 in both directions. … Continue reading Thailand Route 357, TH-33 to TH-340