Yesterday KPBS News brought you the story of San Diego’s efforts to count bicycles, and problems with the data collected by special bike-counting cameras. Well, there’s another way to count bikes: using electromagnetic sensors installed under the pavement. County health officials purchased dozens of those bike counters five years ago. But as KPBS metro reporter Andrew Bowen explains, some of the devices have been neglected, and fallen through the cracks of local government.