What component of "The Three E's" relates to modifying roadway design?

The component of "The Three E's" that relates to modifying roadway design is Engineering. This aspect focuses on the physical design and construction of roadways, which includes elements such as alignment, surface materials, signage, and safety features. Effective roadway engineering can enhance safety, improve traffic flow, and minimize risks for all users, including drivers, pedestrians, and cyclists. It encompasses a variety of approaches, such as traffic calming measures, improved lighting, and the installation of barriers to prevent accidents, thereby creating a safer environment.

The choice of Engineering emphasizes the role that infrastructure plays in influencing driver behavior and reducing collisions, making it a critical aspect of traffic safety strategies.