Tokyo underground trains are currently running an interesting campaign to get people onto specific off-peak trains. Such as the 07.31 out of Ikebukuro, and many

Tokyo underground trains are currently running an interesting campaign to get people onto specific off-peak trains. Such as the 07.31 out of Ikebukuro, and many others. https://www.japantimes.co.jp/news/2019/01/18/national/tokyo-metro-aims-ease-morning-rush-hour-overcrowding-free-soba-tempura/ https://www.japantimes.co.jp/news/2019/01/18/national/tokyo-... Riders are offered a small reward simply for being on that train. But the size of the reward depends on the size of ridership. More riders, bigger reward to everyone. So there's an appeal to group solidarity.