Japanese motorists have a rather clever way to thank each other on the roads when a kind deed is carried out. To show their gratitude to anyone who's shown them goodwill — like letting them enter your lane for example — they simply say thank you by giving a few blinks of their hazard lights.
Without saying a word, motorists are able to acknowledge the good turn and show that they appreciate the courtesy. Such gestures are sorely lacking among the often inconsiderate motorists on Singapore roads— and that's why Facebook user Azry Al'mukz was so impressed when he saw it practiced here.