GPS big data: making cities safer for cyclists

Urban planners in cities around the world, including London, are buying data from the cycle-logging website Strava to gain insight into where and when people ride and help to design better, safer infrastructure.
Strava uses GPS bike computers or smartphones to log where and how fast people ride, then compiles league tables for thousands of “segments” – sections of road anything from a few hundred metres to tens of miles long.
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