MUTCD All Way Sign
Read about the EG Reflective change from 3M EGP Reflective to 3M Advanced Flexible Engineer Grade 7310.
This All Way Sign is an MUTCD traffic control sign with the designation R1-3P. It was designed to inform drivers that all vehicles approaching the intersection must also stop and is to be used only in conjunction with the R1-1 stop sign when all intersection approaches are controlled by stop signs. The use of other legends such as 2-Way, 3-Way, and 4-Way are not permitted to be used with stop signs on public roadways.