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121112-BIKES.mp3

Boston police are still investigating the bicycle crash that killed Boston University graduate student Christopher Weigl. His death last week was the city's 5th bicycle-traffic-related death this year. It's highlighted the tense, split-second decisions bikers and drivers face on the road, as they compete for narrow space.

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And since bike safety is not just an urban issue, later this week we'll go to the suburbs, where conflict and competition for road space continues.