Driver's License Test Prep
Pennsylvania Practice Traffic Lights

A white steady two-way left-turn arrow is displayed over a lane. What does the manual say about that lane?

  1. A.
    It becomes a through lane once your turn is completed
  2. B.
    It is shared by left-turning drivers approaching from the opposite direction Correct
  3. C.
    It is reserved exclusively for drivers turning left from your direction
  4. D.
    It allows left turns and U-turns from either direction
The Why

The answer is "It is shared by left-turning drivers approaching from the opposite direction"

The two-way left-turn arrow lane is shared by left-turning drivers approaching from the opposite direction. Drivers who pick C are half-remembering the one-way left-turn arrow described one line above in the same section, which reserves that lane to a single direction of travel.

Why the others miss

The traps in the wrong answers

A. It becomes a through lane once your turn is completed

The signal governs left turns; it does not shift the lane into through use. Borrows from the reversible-lane signals (yellow X and red X) in the same section, where a lane's direction of travel actually changes, and applies that shift-in-purpose logic to the two-way left-turn arrow.

C. It is reserved exclusively for drivers turning left from your direction

The two-way version explicitly shares the lane with opposing left-turners. Mirrors the one-way left-turn arrow rule stated one line above in the same section, which reserves that lane to a single direction of travel.

D. It allows left turns and U-turns from either direction

The signal permits left turns only; the phrase 'two-way' names who shares the lane, not which movements are allowed. Carries over the habit of using a wide center turn pocket for U-turns as well as left turns.

The Rule

This question tests your knowledge of Traffic Lights in Pennsylvania. Source: Pennsylvania Driver Manual, "LANE USE CONTROL SIGNALS," p.8..

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