The People's Republic of Maryland requires them. I have and use them. Not that I helps with the way the idjits drive around where I work--yet another reason I live out in the country. I've been considering strapping a megaphone to my bike that's wired into my signals to say "Hey, I'm turning left/right you frickin' moron" with the hopes that people will actually see me.
2005 Green America
Fishtail Exhaust, Whitewalls, ISO Grips, Light bar with Relo Turnsignals
"...To them, I'm just a screaming ball of noise."
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