Driver's License Test Prep
Illinois Practice Road Markings

The center line has a solid yellow line on your side, and you started passing a car before that line began. What does the manual permit?

  1. A.
    Pull onto the shoulder until the line ends.
  2. B.
    Return to your lane and abandon the pass.
  3. C.
    Continue only if oncoming traffic yields.
  4. D.
    Complete the pass you already began. Correct
The Why

The answer is "Complete the pass you already began."

The manual carves out one exception: if you began the pass before the no-passing zone started, you may finish it. Choice B stops at the base 'solid yellow on my side means no passing' rule and never reaches the exception written in the next sentence.

Why the others miss

The traps in the wrong answers

A. Pull onto the shoulder until the line ends.

The manual makes no provision for using the shoulder to wait out a no-passing zone. This answer borrows a habit from letting faster traffic go around, which is not in the passing rules.

B. Return to your lane and abandon the pass.

The manual lets you finish a pass you started before the no-passing zone began. This answer applies the base solid-yellow rule and stops there, never reading the next sentence.

C. Continue only if oncoming traffic yields.

Oncoming yield is not the criterion; the exception hinges on when you started the pass. This answer adds a yielding condition drivers use in other maneuvers, not one in this rule.

The Rule

This question tests your knowledge of Road Markings in Illinois. Source: Illinois Rules of the Road, "Chapter 10: Pavement Markings, Yellow No Passing Lines," p.79..

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