Freeways and passingQuestion 93 of 229

Which car may use an HOV lane with no passengers?

  1. Any new car under three years old
  2. Any car with a hybrid badge
  3. A low emission car with a DMV-issued decal
  4. A car with a full-size spare tire
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Correct answer: A low emission car with a DMV-issued decal

A zero or low emission vehicle can use an HOV lane if it shows the special DMV decal.

Source: California Driver's Handbook (DL 600, California DMV, 2025), Section 6. Navigating the Roads: Carpool/High-Occupancy Vehicle (HOV) Lanes, page 16

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Questions last reviewed: 18 October 2026