|An officer demonstrates how|
the bike sonar works.
As a result, some cities are starting to use the biking equivalent of a radar gun. It works by mounting a small gadget on the handlebars on a police bike that sends out sonar to measure the exact distance to a passing car. If someone veers too closely, the cop can ticket them.
This technology, called C3FT, is being used in 11 cities, including Minneapolis, Houston, and Las Vegas.