BEST NEW LAW Sidewalk bicycle ban City of Miami Beginning May 12, the elderly Hispanics who clog the sidewalks of Calle Ocho can feel a little safer walking up and down Little Havana's most famous thoroughfare. That day Miami police officers will begin enforcing a new law that bans bicycles, scooters, and skateboards from the sidewalks of SW Eighth Street between Fourth Avenue and the city's western boundary at the Palmetto Expressway. The Miami City Commission adopted the legislation last year in response to growing complaints from area business owners and residents. Unruly cyclists would tear down Calle Ocho with little regard for pedestrians, sometimes causing bone-crunching collisions, sometimes snatching a purse or two. Offending cyclists will be issued a $25 fine