Perhaps it's all the construction on major arteries like Broadway and Telegraph Avenue, or maybe it's simply a matter of more bikes sharing space with more cars. If you've suspected that riding a bicycle in Oakland is an increasingly perilous proposition, the numbers back you up.

Bicycle-involved injuries in Oakland have increased by more than 30 percent between 2000 and 2008, according to data compiled by the Rand Corporation. Despite more bike lanes on Oakland streets, the number of bicycle involved injuries has grown from 120 in 2000 to 165 in 2008. Still, Oakland is not anywhere near as dangerous for bicyclists as Berkeley, which counted 180 bicycle accidents in 2008 with only a quarter of Oakland's population. Oakland's bicycle mishaps, however, are more fatal than Berkeley's. During the eight year period, 10 bicyclists died in collisions in Oakland while only one died in Berkeley. In San Francisco, where bicycle accidents have increased from 364 in 2000 to 471 in 2008, 19 bicyclists lost their lives.