: Photograph taken for the Columbus Citizen-Journal newspaper and identified on the reverse as a radar speed car in downtown Columbus, Ohio. Visible in the background of the photograph is a large parking lot and the Tracy-Wells Company Building.
This Chevrolet automobile features a vehicle-mounted device used by law enforcement to measure the speed of surrounding objects and detect speeders in traffic. The technology, which uses Doppler radar, was developed during World War II, and by the late 1940s was being put into use by law enforcement and in traffic surveys around the country. View on Ohio Memory.
: P339_B03F05_10_01 Subjects
: Law enforcement; Automobiles; Automotive technology; Traffic; Places
: Columbus (Ohio); Franklin County (Ohio)