Which of the following is a common hazard at highway/roadway incidents?

Down power lines are a significant hazard at highway and roadway incidents because they can create life-threatening situations for both the responders and victims. When a vehicle collision involves power lines, there is a risk of electrical shock or even electrocution if individuals attempt to touch the lines or the vehicles involved. It’s crucial for first responders to assess the scene for downed power lines immediately to ensure safety protocols are followed, including blocking access and notifying utility companies to manage the situation effectively.

The other options do not present hazardous conditions. Clear roads facilitate movement for emergency vehicles and personnel, well-marked exits help in directing traffic and ensuring efficient evacuation routes, and abundant lighting enhances visibility for responders, decreasing the likelihood of accidents or injuries during the incident response. Therefore, the presence of down power lines is a distinctive and dangerous hazard that requires immediate attention and appropriate safety measures.