California DMV Permit Test (Class C)Safe Driving PracticesMedium
You are driving on a freeway and observe a car ahead of you swerving slightly within its lane and braking erratically. What does this behavior most likely indicate?
- AThe driver is likely distracted or impaired.
- BThe driver is signaling to change lanes soon.
- CThe car has a mechanical issue that needs immediate attention.
- DThe driver is practicing evasive maneuvers.
Show answer & explanationAnswer & explanation
Correct answer: A. The driver is likely distracted or impaired.
Swerving within a lane and erratic braking are common signs of distracted driving (e.g., texting, talking on the phone) or impaired driving (e.g., alcohol, drugs, fatigue). Recognizing these signs allows you to take defensive action to keep a safe distance.
Why the other options are wrong
- B. Lane change signals are typically turn signals, not erratic swerving and braking.
- C. While possible, mechanical issues often manifest differently (e.g., smoke, loud noises, inability to steer) and erratic braking/swerving are stronger indicators of driver impairment/distraction.
- D. Practicing evasive maneuvers on a public freeway is highly unlikely and unsafe.
Signs of Impaired/Distracted Driver
Erratic driving behaviors like swerving, inconsistent speed, or sudden braking often indicate a distracted or impaired driver.
- Maintain extra following distance.
- Avoid passing if possible.
- Report dangerous drivers if necessary (from a safe location).
- Increase your own alertness.
Memory trick: Wobbly, weave, and brake, a danger they make.