Which description correctly states when turning left on red is allowed?

• A. You are turning onto a two-way street.
• B. There are signs prohibiting the turn.
• C. There is no cross traffic.
• D. You are turning onto a one-way street, in the left direction, in the left-most lane, into the left-most lane on the cross road, with no nearby sign prohibiting the turn.

Answer: (D)

Turning left on red is allowed only when you’re starting from a one-way street and turning onto another one-way street, and there’s no sign that prohibits the turn. You must come to a full stop and yield to all traffic and pedestrians before making the turn. The description in this item matches exactly that scenario: you’re turning left from a one-way street into the left-most lane of another one-way street, and there’s no prohibition sign. That combination is what makes the left-on-red maneuver legal in many jurisdictions.

The other situations aren’t correct because they either involve turning onto a two-way street, which isn’t allowed on red, or involve a sign prohibiting the turn, which would disallow it regardless of street configuration, or don’t specify the necessary one-way-to-one-way setup.