What should a driver do if an authorized emergency vehicle is parked on the roadside?

When an authorized emergency vehicle is parked on the roadside, the appropriate response is to reduce speed and vacate the lane closest to the vehicle. This action prioritizes safety for both the occupants of the emergency vehicle and other road users. Reducing speed gives the driver more time to assess the situation and respond accordingly, helping to avoid potential accidents. Additionally, moving away from the lane closest to the emergency vehicle minimizes the risk of collision, as emergency responders may be active in or near the roadway.

The underlying principle is to ensure that emergency personnel can work safely and that drivers are cautious when approached by such situations. This approach is consistent with traffic laws in many jurisdictions, which often include "move over" laws designed to enhance safety around emergency scenes.