The expression TIT stands for This Is Thailand and is used for things that are typically Thai. In my serie This Is Thailand (see label) here a photo taken a few years ago, but I love this! The U-turn is closed by means of poles and a chain, so cars can not use it. But what about motorbikes? Well someone put 2 higher poles so the chain can go higher. So motorbikes can ride under it. Yes, TIT. And of course police does not care.