u/Ayatollah_everyday

I am designing a system that automatically controls the traffic lights at a zebra crossing. I need safety sensors to detect human presence at both ends of the zebra crossing for a major road on a mine, but I can't seem to settle on one.

I have thought of PIR, and I can't seem to find the one that can safely work for this application.

I have also thought of a light curtain, but I am not sure if this is the appropriate application for that.

Any thoughts?