###Live Caption:Cyclists biking along Market Street at Grant Ave. in San Francisco, Calif., on Monday, May 9, 2008. Photo by Liz Hafalia / San Francisco Chronicle###Caption History:Cyclists biking along Market Street at Grant Ave. in San Francisco, Calif., on Monday, May 9, 2008. Photo by Liz Hafalia / San Francisco Chronicle###Notes:Cyclists biking along Market Street at Grant Ave. in San Francisco, Calif., on Monday, May 9, 2008. Liz Hafalia / The Chronicle / {city } / 5/11/08  ** cq###Special Instructions:�2008, San Francisco Chronicle/ Liz Hafalia  MANDATORY CREDIT FOR PHOTOG AND SAN FRANCISCO CHRONICLE. NO SALES- MAGS OUT. Photo: Liz Hafalia
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