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Bike Accidents

Transportation Nation

City Aims to Boost Bridge Safety for Cyclists

Thursday, November 20, 2014

The Department of Transportation plans to focus on the 16 bridges connecting Northern Manhattan and the Bronx.
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Transportation Nation

San Francisco Bike Accidents Rise Faster than the Rate of Cycling; Bay Citizen Maps Crash Data

Tuesday, February 08, 2011

(Kate Hinds, Transportation Nation; San Francisco–Casey Miner, KALW News) Bicycling in San Francisco can be glorious - paths by the beach, hills with sweeping views of the bay, the ability to cycle in the middle of January without having to come up with creative ways to keep your hands warm.

But it's also rife with "anger, misunderstanding, and mistrust between motorists and cyclists," according to a report issued last year by a San Francisco Civil Grand Jury, which investigated the implementation of the city's bike plan. (Report here; pdf.) This sentiment is a huge issue and perhaps contributes to this jarring statistic: in San Francisco, bike crashes have grown 8% in the past two years--outpacing the growth in ridership, which was 3%. (By comparison, New York City, which has also seen a growth in cyclists -- saw bike crashes decline by 46% from 1996 to 2003.)

That San Francisco data is courtesy of a new comprehensive interactive map by the nonprofit news organization the Bay Citizen, which just released a data app called the "Bicycle Accident Tracker."  We asked Bay Citizen staff writer Zusha Elinson and web producer Tasneem Raja how they got the data - and what they've learned from crunching hundreds of accident reports. (They also began encouraging people to report accidents directly to the Bay Citizen.)

"The bikers, for the most part, think the cars are crazy. And the cars all think the bikers are crazy," said Elinson. They set about mapping every bike accident the San Francisco Police Department wrote a report for in the last two years.  But what constitutes a report-worthy bike accident throws a bit of a monkey wrench into the data crunching.

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