Which of the following is NOT considered a typical road environment hazard?

Traffic lights are typically not considered a road environment hazard in the same way that poles, bridge piers, abutments, and steep side slopes are. While they are crucial elements for traffic control and safety, they do not pose a physical hazard to vehicles or pedestrians if they are functioning properly and located according to design standards.

In contrast, poles can present a significant risk if vehicles collide with them, as they are often located close to the roadway. Bridge piers and abutments can also be hazardous, especially in case of an accident, as they are solid structures that can cause severe impacts. Steep side slopes can lead to vehicles losing control and rolling over if they venture too close to the edge. Hence, traffic lights serve a vital purpose in managing traffic flow and enhancing safety without contributing to physical hazards in the environment.