Driver's License Test Prep
Pennsylvania Practice Traffic Lights

A steady yellow X is displayed over the lane you are driving in. What does the manual say it means?

  1. A.
    You must change lanes; the lane's direction will soon reverse Correct
  2. B.
    The lane is closed for construction ahead
  3. C.
    You may use the lane only to make a left turn
  4. D.
    You may continue in the lane but must yield to oncoming traffic
The Why

The answer is "You must change lanes; the lane's direction will soon reverse"

A steady yellow X warns that the lane's direction of travel is about to reverse; change lanes and get ready to leave the lane safely. In D, the yellow X gets read like a flashing yellow warning that simply says proceed with care.

Why the others miss

The traps in the wrong answers

B. The lane is closed for construction ahead

A steady yellow X is about a reversible lane changing direction, not a construction closure. A red X, not a yellow X, tells drivers they may not use a lane. This answer treats any X over a lane as a generic 'lane closed' marker, the way orange cones flag a work zone.

C. You may use the lane only to make a left turn

Left-turn-only lanes are marked by a white arrow, not a yellow X. This answer half-remembers overhead lane-control symbols as always restricting the lane to turning traffic.

D. You may continue in the lane but must yield to oncoming traffic

The signal requires leaving the lane, not sharing it. This answer reads the yellow X like a flashing yellow warning to proceed with care.

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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