You approach a single solid white line separating your lane from the next lane going the same direction on a Texas road. According to the manual, what does this marking tell you about crossing it?
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A.
Crossing it is allowed if you signal first.
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B.
Crossing it should be avoided if possible. Correct
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C.
Crossing it is completely prohibited.
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D.
Crossing it is allowed only when passing.
The answer is "Crossing it should be avoided if possible."
A single solid white line means crossing it should be avoided if possible, not that it is off limits. The trap is C: learners carry over the rule for the double solid white line printed in the very next sentence of the same section, where crossing truly is prohibited, and apply it to the single-line version.
The traps in the wrong answers
A. Crossing it is allowed if you signal first.
Treats a solid white line as an ordinary lane divider that a turn signal clears. This answer falls back on the everyday lane-change habit of signaling and moving, which the manual does not sanction for this marking.
C. Crossing it is completely prohibited.
Confuses the single solid white line with the double solid white line rule printed one sentence later. This answer carries the double-solid-white prohibition over to the single-line version because the two rules sit back-to-back on the page.
D. Crossing it is allowed only when passing.
Applies the broken-yellow passing exception to a marking the manual treats differently. This answer reaches for the broken-yellow passing rule from two-lane rural roads because that is the crossing exception most drivers remember.
This question tests your knowledge of Road Markings in Texas. Source: Texas Driver Manual, "Solid Lines," p.34..
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