Improving speed measurements for cars, bullets

While today's law enforcement officers don't wear utility belts full of crimefighting gadgets like Batman, they do rely on a variety of state-of-the-art technologies to do their jobs efficiently and safely. Two of these devices -down-the-road (DTR) radar used in speed enforcement and the ballistic chronograph, which measures the speed of bullets -- soon should be more useful tools thanks to recent research conducted by the Office of Law Enforcement Standards (OLES) at the National Institute of Standards and Technology.

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