What is the purpose of the QX55's rear cross-traffic alert?

The purpose of the QX55's rear cross-traffic alert is to notify the driver of approaching vehicles when reversing. This feature enhances safety by providing an additional layer of awareness, especially in scenarios where the driver may have limited visibility, such as pulling out of a parking space or driveway. When the vehicle is in reverse, the system uses sensors to detect traffic coming from either side and alerts the driver with visual or audible warnings. This capability is particularly beneficial in busy environments, helping prevent potential collisions with vehicles that may be approaching from a blind spot. The other options, while related to driver assistance features, do not accurately describe the specific function of the rear cross-traffic alert.