US road sign R4-7 · regulatory signs
Keep right
California MUTCD, sign R4-7What does the Keep right sign mean?
Keep to the right of the island or the obstruction.
How regulatory signs work
They give a rule you must obey. They are rectangular unless the manual names another shape (California MUTCD, section 2B.02); the STOP sign, for example, is an octagon (California Driver’s Handbook, “Laws and Rules of the Road”).
