California DMV Permit Test (Class C)Traffic Signs and SignalsEasy
You are driving on a two-lane road and approach an intersection. You see a white rectangular sign with a black symbol of a truck with a diagonal line through it. What does this sign indicate?
- ATrucks may only use the right lane.
- BTrucks must turn right ahead.
- CTrucks must use a different route.
- DTrucks are prohibited from entering this road or area.
Show answer & explanationAnswer & explanation
Correct answer: D. Trucks are prohibited from entering this road or area.
Regulatory signs use symbols and text to inform drivers of specific laws or regulations. A diagonal line through a symbol universally indicates 'no' or 'prohibited'.
Why the other options are wrong
- A. A lane restriction for trucks would typically be indicated with a different sign, often showing a truck in a specific lane.
- B. This sign does not indicate a required turn.
- C. While trucks might need a different route, this sign specifically prohibits them from the current one, not just suggesting an alternative.
Prohibitory Symbol
A regulatory sign featuring a red circle with a diagonal line (or a black diagonal line on a white sign) through a symbol, indicating that the action or vehicle type depicted is prohibited.
- Red circle with diagonal line is common for general prohibitions.
- Black diagonal line on white is also used for specific prohibitions.
- Immediately warns drivers against certain actions or vehicle types.
Memory trick: A diagonal 'NO' means don't go, especially for that truck!