On-street parking means parking the vehicle anywhere on the street or on the curb. On some streets, you can always park your car on the street, but sometimes there are some restrictions. These restrictions are mainly presented on traffic signs. Sometimes you can only park on one side of the street, and sometimes you are not allowed to park your car at all. In this case, you will have to get parking permit. In order to ensure that people follow these rules and restrictions, enforcement officers will be hired by cities.
This video is to show wireless on-street parking, consists of vehicle detector, payment terminal or enforcement terminal; and parking meter is optional terminal.