I spend a fair bit of time on construction sites, and cameras have one huge issue compared to mirrors: They’re one-way.

With a mirror, I can see the driver in the mirror. I can make eyecontact and confirm that they’ve seen me. With a camera, I have no idea if they’ve seen me. Maybe they can see more, but if they happen not to be looking, I have no way to tell.

And our stupid road regulations don’t allow for both.