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Compliance
Section 2B.22 Advance Intersection Lane Control Signs (R3-8 Series)
Guidance
- Two-Way Left Turn Only (R3-9a or R3-9b) signs (see Figure 2B-6) should be used in conjunction with the required pavement markings where a non-reversible lane is reserved for the exclusive use of left-turning vehicles in either direction and is not used for passing, overtaking, or through travel.
Source: 2009 MUTCD