Final answer:
The number one safety consideration at roadway incidents is the safety of first responders and the public.
Step-by-step explanation:
The number one safety consideration at roadway incidents is the Safety of first responders and the public. It is crucial to prioritize the safety of those who are involved in the incident and the general public. This includes ensuring that responders have adequate protection and training, as well as implementing measures to minimize risks and hazards at the scene.