Final answer:
Headlights are required when visibility is 300 feet or less to ensure that drivers can safely see the road and be seen by others. Local laws should be checked for specific guidelines. The correct answer for when to use headlights due to limited visibility is option (b).
Step-by-step explanation:
The question addresses a traffic law related to the required use of headlights for increased visibility and safety while driving. Although the exact laws can vary by jurisdiction, there is a common standard that headlights should be used when visibility is limited to certain distances. The options given are:
- 100 feet or less
- 300 feet or less
- 500 feet or less
In most cases, the correct answer is:
(b) 300 feet or less.
Drivers need to use their headlights not only during the night but also anytime visibility is compromised, such as due to fog, heavy rain, or other environmental factors. By using headlights when visibility is 300 feet or less, drivers can better see the road ahead and make their vehicles more visible to others, which is essential for preventing accidents.
You should always refer to the local traffic laws to confirm the specific requirements for when to use headlights in your particular location. In the final part of the answer, you should choose option (b) as the correct one for the required use of headlights when visibility is limited.