Mounted on roads or on police cars, Automatic License Plate Readers capture images of every passing car and convert the license plate into machine-readable text so that they can be checked against hot lists of cars potentially wanted for wrongdoing.
有的装在马路上方，有的在警车上， 自动抓拍车牌相机会拍下经过的每一辆车， 然后把汽车牌照转换成可机读的文字， 这样就可以对照着黑名单 查出可疑车辆。