According to an international study of locations where all-way stop signs are in use, they can reduce accidents by 45%.*
I made an “R” sticker in the same font, colors, and dimensions as the all-way stop signs to see if we can reduce other conflicts too.
The template is available to download here.
*Elvik, Rune; Alena Hoye; Truls Vaa; Michael Sorensen (2009). Handbook of Road Safety Measures.