Which type of system provides warnings if a truck is drifting out of its lane?

Lane Keep Assist is designed to help maintain a vehicle's position within its lane markings. It uses cameras and sensors to monitor the truck's position in relation to the lanes on the road. If the system detects that the truck is beginning to drift outside of its lane without a turn signal being activated, it provides warnings to the driver. In many cases, Lane Keep Assist can also make subtle adjustments to the steering to help guide the vehicle back into the lane if the driver does not respond to the warning.

In contrast, the other systems have different focuses. Blind Spot Monitoring aids drivers by alerting them of vehicles in their blind spots, enhancing safety during lane changes. Forward Collision Warning is aimed at reducing the risk of rear-end collisions by alerting the driver of potential hazards ahead. Trailer Stability Control enhances stability when towing a trailer but does not track lane positioning. Therefore, Lane Keep Assist is the correct choice as it specifically addresses the need for warnings when a truck is drifting out of its lane.