Mandatory Left Turn Traffic Sign - Road Safety Guide #134420 (License: Personal Use)

This is a regulatory traffic sign used internationally to indicate that vehicles must turn left at the designated junction. The sign features a white arrow on a blue circular background with a white border, conforming to Vienna Convention standards for mandatory direction signs. It is typically mounted above or beside the road just before an intersection where turning left is required by law.

Used on roads and highways to enforce traffic flow and prevent accidents at intersections; matches user intent for understanding traffic signage, driver education, or navigation assistance.