Regulatory Road Sign (R10-8)
Use Lane with Green Arrow Sign Meaning & Driving Rules
Instructs drivers to travel only in lanes displaying illuminated green downward arrows on overhead signals.
Required Driver Action & Right-of-Way Protocol
Position your vehicle only in lanes displaying an illuminated green downward arrow.
Detailed Overview & Purpose
The Use Lane with Green Arrow sign (R10-8) governs overhead lane-use control systems on freeways, bridges, and toll plazas. A green downward arrow means the lane is open; a red X means the lane is closed.
Key Standard & Origin: Red X signals mean you must vacate the lane immediately — emergency vehicles or stalls are ahead.
Where You'll Find This Sign
Toll plazas, bridge decks, tunnel approaches, and managed freeway lanes.
Common Driver Mistakes to Avoid
Driving under a red X signal because the lane appears temporarily empty.
How This Sign Appears on the DMV Knowledge & Road Test
Overhead lane control signal meanings (green arrow vs. yellow X vs. red X).
Legal Penalties and Moving Violations
Driving in a closed lane under a red X carries moving violation citations.
When you encounter the official Use Lane with Green Arrow (R10-8) on a roadway, what is your legal duty?
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