Regulatory Road Sign (R4-8)
Keep Left of Divider Sign Meaning & Driving Rules
Directs traffic to pass to the left of a traffic island, construction barrier, or roadway divider.
Required Driver Action & Right-of-Way Protocol
Guide vehicle to the left side of the divider or traffic island.
Detailed Overview & Purpose
The Keep Left sign (R4-8) is the counterpart to Keep Right. It is used in one-way systems, toll plazas, and construction diversions to channel traffic to the left side of an island or barrier.
Key Standard & Origin: Much less common than Keep Right, this sign is only used where traffic is legally channeled to the left.
Where You'll Find This Sign
One-way street splits, toll plaza channelization, and construction diversions.
Common Driver Mistakes to Avoid
Defaulting to the right and hitting an obstacle when the sign explicitly commands Keep Left.
How This Sign Appears on the DMV Knowledge & Road Test
Tests directional regulatory sign comprehension.
Legal Penalties and Moving Violations
Failing to obey channelization commands carries moving violation citations.
When you encounter the official Keep Left of Divider (R4-8) on a roadway, what is your legal duty?
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