Traffic-rule violators in Chennai to get e-challan sent to mobile number Traffic-rule violators are identified with the help of advanced-surveillance cameras that capture number plates of their motor vehicles, sources said. Share Via Email | A+A A- Police personnel monitoring traffic at Upgraded Automated Traffic Regulations Observation Zone Control Room at Anna Nagar on Thursday | R Satish Babu By Express News Service CHENNAI: Those breaching traffic rules in Anna Nagar will now get an e-challan sent to their mobile number. The new facility is the result of the integration of Traffic Regulation Observed Zone (TROZ) with National Informatics Centre (NIC). Traffic-rule violators are identified with the help of advanced-surveillance cameras that capture number plates of their motor vehicles, sources said.