Regulatory Road Sign (R4-6)
Truck Lane 500 Feet Sign Meaning & Driving Rules
Advance regulatory notice that a dedicated climbing lane for slow heavy trucks begins 500 feet ahead.
Required Driver Action & Right-of-Way Protocol
Slow heavy vehicles prepare to enter the climbing lane on the right.
Detailed Overview & Purpose
The Truck Lane 500 Feet sign (R4-6) gives early warning of an upcoming uphill climbing lane.
Key Standard & Origin: Allows heavy trucks to move right before losing speed on the incline.
Where You'll Find This Sign
Approaches to mountain highway grades.
Common Driver Mistakes to Avoid
Fast passenger cars getting trapped behind slow trucks in the climbing lane.
How This Sign Appears on the DMV Knowledge & Road Test
Tests knowledge of highway climbing lanes.
Legal Penalties and Moving Violations
Failure to use climbing lanes when impeding traffic carries moving violation points.
When you encounter the official Truck Lane 500 Feet (R4-6) on a roadway, what is your legal duty?
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