Regulatory Road Sign (R3-9f)
Reversible Lane Control Sign Sign Meaning & Driving Rules
Regulates lanes whose direction of travel changes according to the time of day or rush hour periods.
Required Driver Action & Right-of-Way Protocol
Check the posted time schedule or overhead electronic signals before entering the reversible lane.
Detailed Overview & Purpose
The Reversible Lane sign (R3-9f) controls center lanes that flow inbound during morning rush hour, outbound during evening rush hour, and function as shared turn lanes during off-peak hours.
Key Standard & Origin: Reversible lanes are often monitored with overhead electronic signals showing green arrows or red X's.
Where You'll Find This Sign
Bridges, tunnels, and urban commuting corridors with high directional peak flows.
Common Driver Mistakes to Avoid
Driving in a reversible lane when overhead signals display a red X.
How This Sign Appears on the DMV Knowledge & Road Test
Tests understanding of reversible lane rules and overhead red X / green arrow signals.
Legal Penalties and Moving Violations
Driving in a reversible lane against flow is classified as a severe Wrong Way violation.
When you encounter the official Reversible Lane Control Sign (R3-9f) on a roadway, what is your legal duty?
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