[stephentmcm]

Interesting that's likely a location thing. Also I'd question < 10mph over isn't speeding, assuming even a 60mph speed limit you're allowing drivers to travel at over 10% faster than posted.

Depending again on location, there's almost definitely laws on indicating turns which I'd say is probably the one I see ignored the most (to cut off the 'I see bicycles not indicating' line, most places have a 'when safe to do so' clause for bicycles).