Roadside mirrors for oncoming traffic

[plain]

The one I'm most familiar with is at the top of the offramp from I-95 to Broad St (US 250) at the edge of downtown. It has a dual purpose: for pedestrians to see if vehicles are coming up the ramp, and for vehicles on the ramp to see both pedestrians and stopped traffic.

https://maps.app.goo.gl/8qj1XuP2jA7qSrR58

[Road Hog]

These are actually very common in Germany, mostly at narrow or sight-restricted locations with the sign "Spiegel beachten."

[ErmineNotyours]

Coming out from the tunnel under the Golden Gate Bridge toll plaza.