At busy junctions, vehicles that want to go straight ahead or take a right turn wrongfully take the free left lane to get to be first in line or closer to the stop line / zebra crossing.
This creates a pile up of vehicles behind. When the traffic signal turns green, chaos ensues due to the blocked free left lane. Efficiently managing free left turn flow will help ease congestion at such roads. The evidence camera checks whether the left turn is allowed and open.
If the left turn is on and if any vehicle is obstructing a vehicle from taking the free left turn, the system will capture the details of the vehicle causing obstruction.