Number plate recognition to control traffic lights.
https://www.serioussecurity.com.au/business-security/license-plate-recognitiion-systems/
REPORT ON THE INQUIRY INTO AUTOMATIC NUMBER PLATE RECOGNITION TECHNOLOGY (2007)
https://cabinet.qld.gov.au/documents/2009/apr/gov%20response%20to%20travelsafe%20report%20no%2051/Attachments/Travelsafe%20R51.pdf