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Official United States Optional Left or Straight Lane Road Sign

Federal MUTCD Specifications

Standard Code
R3-6L
Sign Category
Regulatory
Shape
Vertical Rectangle
Color Scheme
White with Combined Left and Straight Arrows

Regulatory Road Sign (R3-6L)

Optional Left or Straight Lane Sign Meaning & Driving Rules

Permits vehicles in this lane to either turn left or continue straight through the intersection.

Required Driver Action & Right-of-Way Protocol

Stay in your assigned lane throughout the entire turn if turning. If going straight, proceed with caution.

Detailed Overview & Purpose

The Optional Movement sign (R3-6L) informs motorists that the lane allows two legal movements: you may make a left turn or continue straight. Drivers making a left turn from this optional lane must yield to oncoming traffic unless a green arrow is displayed.

Key Standard & Origin: When paired with a dedicated Left Turn Only lane on the far left, this creates a dual left-turn intersection.

Where You'll Find This Sign

Multi-lane arterial approaches where traffic volume justifies dual left-turn or flexible through movements.

Common Driver Mistakes to Avoid

Sideswiping vehicles in the inner turn lane by drifting out of your assigned turning path.

How This Sign Appears on the DMV Knowledge & Road Test

Tests proper lane tracking through multi-lane turn intersections.

Legal Penalties and Moving Violations

Failing to maintain lane position during dual turns carries moving violation fines.

Sign Variations & Related Types

Optional Right or Straight (R3-6R)

Permits turning right or proceeding straight.

DMV Knowledge Check

When you encounter the official Optional Left or Straight Lane (R3-6L) on a roadway, what is your legal duty?

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