I drove from Second Road along Soi 5 to the beach. This is now a one-way road heading west, i.e. towards the beach, yet I met around 6 cars driving in the opposite direction. On Beach Road itself, as usual since the one-way system was begun, bicycles, motorbikes and samlors all believe that it doesn't apply to them, with 2 cars and a truck also deciding that it's silly to follow the signs. It seems to be another of those optional Thai traffic rules, a bit like stopping at a red light, lol.