What safety feature uses cameras to help keep vehicles in their lanes?

• A. Adaptive cruise control
• B. Lane departure warning systems
• C. Blind-spot monitoring systems
• D. Parking assistance systems

Answer: (B)

Lane departure warning systems utilize cameras to monitor the vehicle's position within its lane on the roadway. These systems can detect if the vehicle is unintentionally drifting out of its lane without signaling and provide alerts to the driver, allowing them to take corrective action. This technology is instrumental in enhancing safety by reducing the likelihood of accidents caused by unintentional lane changes, especially on highways or fast-moving roads.

Adaptive cruise control primarily focuses on maintaining a set speed and adjusting the vehicle's speed to match the traffic ahead but does not necessarily involve lane positioning. Blind-spot monitoring systems help drivers by detecting vehicles in their blind spots but do not actively manage lane keeping. Parking assistance systems aid in maneuvering the vehicle during parking but are not related to lane position on the road. Thus, the correct choice accurately represents the function of the technology that directly assists in maintaining lane discipline.