Video-Surveillance System to Boost Traffic Decongestion Efforts on National Highways. Cameras to Help Curb Congestion at Toll Plazas on National Highways. Highway Monetisation by NHAI to Integrate Two More Highway Bundle Projects. NHAI’s Drive to Implement Cameras at the Toll Booths Set to Ease Traffic Flow. NHAI to Deploy Cameras at Toll Plazas for Real-Time Surveillance of Traffic Flow. Installation of Cameras by NHAI at Toll Plazas to Augment Smooth Traffic Flow.