Bathroom Signage

[jack]

How should toilets be signed in an ideal world?

I decided to try a third party poll site, though I'm not sure I like this one:
http://www.polljunkie.com/poll/eijrsw/bathroom-signage

(If you have gendered toilets at all, rather than unisex-only.)

I don't like the skirt/no-skirt symbols, but all the others seem more open to misinterpretation.

Comments

[pseudomonas]

In an ideal world, single-room toilets where only one person (of any gender) is in them at a time.

[chess]

Doesn't that lead to longer toilet queues though? I got the impression that urinals were a lot more efficient than cubicles.