What role do collision avoidance systems play in transportation safety?

Collision avoidance systems are critical components in enhancing transportation safety by notifying drivers of potential hazards. They utilize various sensors and technologies, such as radar, cameras, and lidar, to monitor the vehicle's surroundings in real-time. When the system detects a possible collision, it can provide alerts to the driver, giving them the opportunity to take corrective action, such as braking or steering to avoid an accident. This proactive approach to hazard detection significantly contributes to reducing the likelihood of crashes and promotes safer driving environments.

The other options do not accurately reflect the role of collision avoidance systems. For instance, while reducing vehicle weight can improve fuel economy, this is not a function of collision avoidance systems. Similarly, the notion that they enhance driver distraction contradicts the primary purpose of these systems, which is to assist rather than distract. Finally, while some systems can automate vehicle navigation to a degree, collision avoidance systems do not completely automate navigation; rather, they support the driver by providing critical information about their surroundings.