What are the lamp distance requirements for an emergency on a vision obscured road?

The lamp distance requirements for an emergency on a vision obscured road are set to ensure that the vehicle is visible to other drivers and that emergency personnel can safely operate in low-visibility situations. The correct answer indicates the standards set for visibility in such conditions.

Specifically, having lights positioned 10 feet behind and 100 feet in front of the vehicle allows for adequate warning to oncoming traffic and provides enough distance for a driver to notice the emergency situation in advance. This is especially crucial on roads where visibility may be compromised due to environmental factors such as fog, rain, or other obstacles.

Further, this distance helps both the emergency vehicle operators and other drivers to navigate safely, reducing the risk of collisions or misunderstandings in emergency scenarios. The other options specify greater distances that may not be practical or necessary given the standards established for emergency visibility on vision obscured roads.