A new sort of "undercover cop" has arrived in Arlington. It's a subtle new way to track how fast people are driving and it enables police to see exactly where they're doing it. Arlington Police Department volunteer Ed Krell acts as a covert crimefighter these days. He sets up clandestine devices across the city that track speeds while hiding in plain sight. "It’s called covert radar,” he says. Strapped to a power pole, the unassuming device, about the size of a lunchbox, quietly captures the speed of every vehicle that passes by. "It keeps everybody honest as far as their speed," Krell says. The data is crunched and presented to police who can determine whether a particular street should have a speed patrol. It can even tell police which hours of the day are best to nab speeders. Krell says it gives law enforcement a much more accurate picture of how fast people are really driving. "People don’t even know it’s there so they will actually drive like they normally do," he says. READ THE FULL STORY: https://www.king5.com/article/traffic/traffic-news/speed-radar-devices-arlington-help-police/281-65bdc828-3cec-440a-9620-41b70144e233