Which of the following actions is legal under Iowa's move over law?

Moving over into another lane when it is safe to do so is a legal action under Iowa's move over law. This law is designed to protect emergency responders and certain vehicles on the roadside by requiring drivers to change lanes or slow down when passing a stationary emergency vehicle with its lights flashing.

When a driver safely changes lanes, they contribute to the safety of emergency personnel who may be attending to incidents or performing duties at the side of the road. The law emphasizes the importance of creating a buffer zone for those working in emergency situations, helping to prevent potential accidents.

The other options do not align with the requirements of the move over law. Driving at the same speed as emergency response vehicles does not provide the necessary precautions and could endanger both the drivers and the responders. Passing an emergency vehicle without slowing down goes against the spirit of the law, which aims to reduce risks for emergency personnel. Lastly, entering a construction zone without adjusting speed violates safety protocols designed to protect workers in those zones. Thus, the only action that conforms to Iowa's move over law is to safely move over into another lane.