What are guard rails, street lights, and electronic notification signs examples of?

Guard rails, street lights, and electronic notification signs are all designed to enhance safety within the Highway Transportation System. These elements are crucial for directing traffic, preventing accidents, and ensuring safe travel for all roadway users.

Guard rails serve to protect vehicles from leaving the roadway in dangerous situations, thereby reducing the likelihood of crashes. Street lights improve visibility at night, allowing drivers to see more clearly and react to potential hazards more effectively. Electronic notification signs convey important information to drivers, such as traffic conditions or warnings about upcoming hazards, which can help prevent accidents and promote safer driving practices.

In contrast, traffic laws refer to the regulations governing driver behavior, vehicle operation, and road use, while vehicle features pertain to the components and technologies present in individual vehicles that assist with driving, such as brakes or airbags. State regulations encompass laws specific to individual states, which may address a variety of topics beyond just safety. However, the common theme of guard rails, street lights, and electronic notification signs falls squarely under the category of enhancing safety within the broader Highway Transportation System.