Give Up Your Seat. Please?

In most of East Asia, signs near on public transportation appeal to your conscience: they invite you to "please give up your seats to those who need them more." In America, the signs state baldly that "federal law requires that these seats be given to seniors and those with disabilities." One sign of a more legalistic society. The latter has a somewhat disclamatory air too: it sounds as though the transport company really doesn't want to deprive you of your seat, but was forced to do so by Washington.

The signs on the Bangkok Metro show a elderly person, a pregnant woman, children, and a bald guy in a saffron robe (took me a few seconds to figure that was a monk.) The bit of colour in a otherwise monochrome sign was striking.