When may drivers who are not part of a funeral procession drive between vehicles in a moving funeral procession?

The correct answer is when directed to do so by law enforcement. This is because law enforcement officers are authorized to manage traffic and ensure safety during events such as a funeral procession. When they direct traffic, their instructions take precedence over standard traffic laws and signals. This means that other drivers must adhere to the directions given by officers, even if it involves driving through a funeral procession.

In contrast, other scenarios such as traveling to a hospital or following traffic signals do not provide lawful justification for intervening in a funeral procession. Funeral processions are granted special considerations under laws in many jurisdictions, and non-participating drivers should not disrupt them unless specifically instructed by law enforcement to do so. This helps maintain the dignity of the procession and ensures safety on the roads.