US road sign R3-2 · regulatory signs
No left turn
California MUTCD, sign R3-2What does the No left turn sign mean?
You may not turn left here.
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”).
