Which of the following is a hazard when driving with Code 3?

When driving with Code 3, which involves the use of lights and sirens to respond to emergencies, one of the significant hazards is navigating through blind intersections. Blind intersections can obscure the visibility of approaching vehicles and pedestrians, creating a dangerous situation. When an ambulance approaches such an area, it might not be able to see if other vehicles or pedestrians are entering the intersection, leading to a higher risk of accidents.

In contrast, highways with no traffic, pedestrians crossing safely, and clear roads do not present the same level of danger, as they either allow for easy navigation or suggest a low likelihood of encountering obstacles or hazards. Therefore, when responding to emergencies with Code 3, being vigilant at blind intersections is crucial to ensure the safety of all road users.