Texas Driver's License Knowledge TestTraffic Signs and SignalsHard

A driver is in the far right lane of a multi-lane roadway marked with a solid white line and a white arrow pointing straight ahead. Adjacent to the solid white line is a broken white line separating the lane from the next lane to the left. What do these markings primarily indicate for the driver in the far right lane?

  1. AThe driver may change lanes to the left, but only if they are turning right at the next intersection.
  2. BThe driver is approaching a mandatory turn lane, and must prepare to turn right.
  3. CThe driver must exit the roadway or turn right at the next intersection.
  4. DThe driver may continue straight, but is prohibited from changing lanes to the left.
Show answer & explanation

Correct answer: D. The driver may continue straight, but is prohibited from changing lanes to the left.

A solid white line indicates that lane changes are discouraged or prohibited. In conjunction with a straight arrow, it means the driver must continue straight in that lane. The broken white line to the left indicates that drivers in the adjacent lane may change into the driver's lane, but the solid line on the driver's immediate left prohibits them from changing out of their lane.

Why the other options are wrong

  • A. The solid white line on the driver's side prohibits changing lanes to the left, regardless of turn intentions.
  • B. A mandatory turn lane would typically have a turn arrow and often be accompanied by a 'ONLY' sign or 'RIGHT TURN ONLY' pavement marking, not a straight arrow.
  • C. The straight arrow indicates through movement, not a mandatory exit or turn.

Solid White Line (Lane Marking)

A solid white line separating lanes of traffic moving in the same direction indicates that lane changes are discouraged or prohibited.

  • Discourages lane changes when between through lanes.
  • Prohibits lane changes when approaching an intersection or obstruction.
  • Often used to mark the edge of the roadway or shoulders.
  • Differs from a broken white line, which permits lane changes.

Memory trick: Solid white, stay tight; broken white, move with light.

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