Rubbish bins are placed away from bus stops to separate smokers from other bus users. Utility bills display how your energy consumption compares to your neighbours. Outdoor gyms have been built near the entrances and exits of HDB estates so they are easy to use, available and prominent enough to consistently remind you. Train sta- tions have green and red arrows on the platform indicating where you should stand so as to speed up the alighting process. If you opt to travel at off-peak times (before 0700), your fare is reduced. that-thrived-by-nudging-its-population