Driver's License Test Prep
Texas Practice Right of Way

A tow truck is stopped with its lights activated on a road posted at 20 mph, and traffic prevents you from vacating the lane closest to it. What speed does the Move Over Law require?

  1. A.
    Reduce your speed by 20 mph below the posted limit.
  2. B.
    Cut your speed to half of the posted limit.
  3. C.
    Come to a complete stop before passing the vehicle.
  4. D.
    Slow to less than 5 mph while you pass the vehicle. Correct
The Why

The answer is "Slow to less than 5 mph while you pass the vehicle."

On a road posted under 25 mph, the Move Over Law requires slowing to less than 5 mph past a stopped emergency vehicle with lights on when the closest lane cannot be vacated. Wrong answer A catches drivers who remember the 20-mph-below figure from higher-speed roads and stretch it to apply everywhere.

Why the others miss

The traps in the wrong answers

A. Reduce your speed by 20 mph below the posted limit.

The 20-mph reduction applies only when the posted limit is 25 mph or higher. This answer carries the 20-mph-below figure from higher-speed roads onto a road posted under 25 mph.

B. Cut your speed to half of the posted limit.

The manual sets a specific figure, not a proportional cut. This answer reaches for a "half the limit" rule of thumb when the manual gives a fixed number.

C. Come to a complete stop before passing the vehicle.

The Move Over Law calls for slowing and passing, not stopping. This answer applies the school-bus full-stop rule to a stopped emergency vehicle.

The Rule

This question tests your knowledge of Right of Way in Texas. Source: Texas Driver Manual, "Yield Right-of-Way to Emergency Vehicles," p.22..

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