California DMV Permit Test (Class C)Traffic Signs and SignalsMedium
You are driving on a road and see a yellow, diamond-shaped sign with a black symbol of a truck going downhill. What does this sign indicate?
- AA steep downgrade is ahead, requiring lower gears.
- BTrucks are prohibited from using this road.
- CA truck crossing or entrance is ahead.
- DA truck stop or service area is ahead.
Show answer & explanationAnswer & explanation
Correct answer: A. A steep downgrade is ahead, requiring lower gears.
A yellow, diamond-shaped sign with a black symbol of a truck going downhill is a warning sign indicating a steep downgrade ahead. Drivers, especially those in large vehicles, should be prepared to shift to a lower gear to control their speed.
Why the other options are wrong
- B. Incorrect; prohibitory signs for trucks are usually white rectangles with a red circle/slash.
- C. Incorrect; truck crossing signs show a truck at a right angle, not descending.
- D. Incorrect; truck stop signs are typically blue or green guide signs.
Steep Downgrade Sign
A yellow, diamond-shaped warning sign with a black symbol of a truck going downhill indicates that a steep downgrade (hill) is ahead. Drivers should prepare to use lower gears to control vehicle speed.
- Warning sign (yellow, diamond-shaped).
- Indicates a steep hill going down.
- Advise drivers to use lower gears for control.
Memory trick: Yellow diamonds warn, red circles forbid.