Final answer:
The use of high beam headlights should be limited to conditions without oncoming traffic or when not closely following another vehicle, typically within 500 feet. The ability to resolve the headlights of a car from a distance involves physics calculations related to light and visibility.
Step-by-step explanation:
When discussing the high beam headlights of a car, you are referring to the brighter setting used for the vehicle's front-facing lights, which allows for improved visibility at night or in poorly-lit conditions. However, high beam headlights should not be used when there is oncoming traffic or when following another vehicle closely to prevent blinding other drivers. It is generally recommended to switch to low beam headlights when you are within 500 feet (150 meters) of an oncoming vehicle or closely following another vehicle to ensure road safety.
In relation to the physics problem given, the distance at which the human eye can resolve two headlights that are 1.3 meters apart, with a pupil diameter of 0.40 cm, involves optical resolution calculations. This problem is related to understanding how light and visibility work, which is essential for issues surrounding headlight usage and safety on the roads.