A driver of an emergency vehicle can disregard ordinary rules of the road, signs, and signals under which condition?

The correct answer highlights the specific conditions under which an emergency vehicle driver can lawfully disregard ordinary traffic rules. When an emergency vehicle is responding to an emergency call, the driver is permitted to ignore standard traffic laws as long as certain criteria are met.

This specifically includes activating emergency sirens and flashing lights to signal their urgent status to other road users. The use of these signals alerts other drivers to yield or take appropriate action, thereby facilitating the quick and safe passage of the emergency vehicle. This allows the driver to navigate through traffic more efficiently and respond to emergencies in a timely manner without compromising safety.

Other choices do not capture the full requirement set forth for emergency vehicle operation. For instance, while driving in a safe manner is important for any driver and a weather emergency may be a significant factor, they do not provide the specific legal framework that allows an emergency vehicle operator to disregard standard traffic rules. Simply following another emergency vehicle is also insufficient; it does not ensure that the responding driver is acting under the defined conditions of urgency necessary for an emergency response.