Texas Car / Permit practice question · Safe Driving Practices
About how much standing water on a road is enough to make many cars float?
Answer choices
- About three inches
- About six inches
- About one foot— Correct answer
- About three feet
Why this is the answer
Twelve inches of water will float many cars. Six inches reaches the bottom of most passenger cars and can cause loss of control or stalling, and two feet of rushing water can carry away pickups and SUVs. Water over a road may also hide a missing section of pavement, so turn around instead of testing it.
Source: Texas Driver Handbook — Floods
Content reviewed against official driver handbooks · August 12, 2026
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