Adaptive cruise control

I looked more closely. The button has two cars, bumper to bumper, with a star in the middle and a left facing arrow below them. When I press it up to six red lights are projected on the windshield from a slot in the padded dash. The DIC says Collision Alert and also shows a car with beams and red stripes in front. I can,t find anything in the manual about this. Capt. George