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From a co-worker:
Saturday July 13th, she went on a fund-raiser ride, "piss on cancer". Her boyfriends bike broke down (belt broke; yes, I gave her hell for not carrying a spare) so she rode in the support truck.
The ride was to end a Wally's Pub in Hampton Beach. These were mostly cruiser type bikes.
All riders were stopped and ticketed for loud exhaust, 60$.
All 50 bikes.
No measurement or test proceedure was used.
-D