Final answer:
You are obligated to move to the right and let an emergency vehicle pass when its lights are flashing, regardless of whether a siren is sounding. The presence of lights alone indicates the need for immediate response and right of way for the emergency vehicle.
Step-by-step explanation:
When an emergency vehicle is approaching you from behind with lights flashing, you are obligated to move to the right and let it pass, even if no siren is sounding. The correct answer is a. Yes, always. Emergency vehicle lights are a signal that the vehicle requires the right of way due to an ongoing emergency. The use of sirens can vary based on local laws or the discretion of the vehicle operator, but the presence of flashing lights alone requires action. This requirement is not dependent on the type of emergency vehicle. Always ensure to move safely and according to the local traffic laws when giving way. A citizen's interaction with a police officer helps illustrate how individuals generally respond to recognized authority in traffic situations. When faced with a police vehicle's flashing red and blue lights, most drivers will comply promptly because they realize the police officer has the legitimate authority to make certain requests within the scope of their duty, such as pulling over a speeding vehicle.