United States Permit Test Coach
Pavement markingsQuestion 142 of 223

What does a double solid white lane line mean?

  1. Crossing the line is allowed with care
  2. Crossing the line is discouraged only
  3. Crossing the line is prohibited
  4. Drivers must stop at the line
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Correct answer: Crossing the line is prohibited

Use of a double solid white lane line shows that lane changing is prohibited.

Source: Manual on Uniform Traffic Control Devices for Streets and Highways (MUTCD), 11th Edition with Revision 1 (FHWA, December 2025), Section 3B.06 White Lane Line Pavement Markings, page 589

Practice pavement markings

Questions last reviewed: 18 October 2026