Driver's License Test Prep
Texas Practice Road Markings

You approach a lane divider on a Texas roadway that consists of two solid white lines side by side. What does the manual say about this marking?

Two parallel solid white lines running lengthwise down a dark roadway.
  1. A.
    Crossing is allowed to move into a turn lane
  2. B.
    Crossing is allowed only when passing a slow vehicle
  3. C.
    Crossing is allowed only for emergency vehicles
  4. D.
    Crossing the lines is prohibited Correct
The Why

The answer is "Crossing the lines is prohibited"

The manual says crossing is prohibited where there is a pavement marking of double solid white lines. Drivers who read it as 'allowed with a good reason' are stretching the broken-line passing exception across to a solid marking that the manual gives no exception for.

Why the others miss

The traps in the wrong answers

A. Crossing is allowed to move into a turn lane

A turn lane is entered across a broken or dashed line; the double solid white is not the divider you use for that move. This answer reads any lane divider as crossable when a turn is coming, because that is the everyday move drivers make on most roads.

B. Crossing is allowed only when passing a slow vehicle

The manual lists no passing exception for double solid white; overtaking a slower car does not qualify. This answer stretches the broken-line passing exception to a solid marking and treats the two as interchangeable.

C. Crossing is allowed only for emergency vehicles

The manual writes the double-solid-white rule as an absolute; there is no emergency-vehicle carve-out attached to it. This answer reaches for the general idea that emergencies bend traffic rules and applies it to a marking that carries no exception.

The Rule

This question tests your knowledge of Road Markings in Texas. Source: Texas Driver Manual, "Pavement Markings - Solid Lines," p.34..

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