The world’s first parking meter, known as Park-O-Meter No. 1, is installed on the southeast corner of what was then First Street and Robinson Avenue in Oklahoma City, Oklahoma.

The meters were placed at 20-foot intervals along the curb which corresponded to spaces painted on the pavement. Once retailers spied the forced turnover of potential customers, these futuristic steel beacons became commonplace on the streets in the US commercial districts. Drivers begrudgingly accepted their presence, as they saw them as a practical necessity for regulating parking. By the early 1940s, there were more than 140,000 parking meters operating in the United States.