What does a lane control signal with a steady yellow X above a reversible lane indicate?
- The signal is about to change to a red X. ✓
- The signal is about to change to a green arrow.
- Drivers may drive normally in this lane.
- Drivers may drive slowly in this lane.
Answer: A. The signal is about to change to a red X.
A steady yellow X above a reversible lane means the signal is about to change to a red X, so prepare to leave that lane safely.
Why this is the answer
The Texas handbook describes lane-use control signals as overhead signals that tell you whether you may drive in a specific lane. A red X means you should not drive in that lane. A steady yellow X tells you to prepare to safely vacate the lane because a lane-control change is being made. Since the red X is the signal that forbids the lane, the yellow X is the warning stage before that change; the bank answer matches that sequence.
Why the other answers are wrong
- B. The signal is about to change to a green arrow. — The yellow X does not mean a green arrow is coming; the handbook ties permission to drive in the lane to a steady downward green arrow.
- C. Drivers may drive normally in this lane. — Driving normally is what the green arrow allows, not the yellow X, which calls for preparing to leave the lane.
- D. Drivers may drive slowly in this lane. — Slowing down is not the instruction; the handbook says to prepare to safely vacate the lane.
Remember it
Treat the yellow X as a warning to clear the lane before the red X closes it.
Official handbook: Texas Driver Handbook (DL-7), Chapter 5: Signals, Signs, and Markers , p. 32