MUTCD 11th Edition (2023)
Section 4S.05 — Stop Beacon
Manual on Uniform Traffic Control Devices, Section 4S.05. Standards, guidance, options and support statements, with figures and cross-references.
Section 4S.05 Stop Beacon Standard: 01 A Stop Beacon shall be used only to supplement a STOP sign, a DO NOT ENTER sign, or a WRONG WAY sign. 02 A Stop Beacon shall consist of one or more signal sections of a standard traffic signal face with a flashing CIRCULAR RED signal indication in each signal section. If two horizontally-aligned signal indications are used for a Stop Beacon, they shall be flashed simultaneously to avoid being confused with grade crossing flashing-light signals. If two vertically-aligned signal indications are used for a Stop Beacon, they shall be flashed alternately.…
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