Even though HAS is a partially automated driving system, many factors can impact the performance of the Highway Assist System preventing it from functioning as intended. HAS is unable to guide the vehicle and assist the driver when visibility is poor: this can happen when you’re driving on hills or sharp bends, when the forward-facing camera is obstructed or damaged, or when a bright light faces the camera.
You must always be aware of surrounding traffic and be extra-careful in bad weather, as heavy rain, snow or fog can drastically change the road conditions.