When I saw and photoed this sign, in London, yesterday afternoon …:
…, I thought it was some kind of electronic malfunction. ULEZ? Is that real? Only one way to find out. The Internet.
And the Internet was in no doubt. ULEZ stands for Ultra Low Emission Zone. Question answered.
I just wanted to know if ULEZ was real. It is. The details, for now anyway, interest me less. If you want to know more about ULEZ, you now have the acronym and the knowledge that it stands for something real, and you can learn all you want.