Texas Car / Permit practice question · Safe Driving Practices

Under the Texas Move Over / Slow Down law, if you cannot leave the lane next to a stopped emergency vehicle with its lights on and the posted limit is under 25 mph, you must slow to:

Answer choices

• less than 5 mph— Correct answer
• 10 mph
• 20 mph
• the posted speed limit

Why this is the answer

When a stopped emergency, tow or TxDOT vehicle has its lights on and you cannot move out of the lane next to it, you must slow down. If the posted limit is less than 25 mph, slow to a speed below 5 mph. If the limit is 25 mph or more, slow to no more than 20 mph under it.

Source: Texas Driver Handbook — Yield Right-of-Way to Emergency Vehicles

Content reviewed against official driver handbooks · August 12, 2026