A disc brake for vehicles, in particular to a pneumatically actuated disc brake for utility vehicles, is provided. A method of attaching the keeper to a fishing rod blank aligns it axially with the open end toward the reel seat and applies silicone type or an equivalent waterproof fastener means around the fixed end and the rod blank. ; R201 represents hydrogen, halogen, acyl, etc. The system selects the objects that may enter the travel path of the host vehicle, and makes a threat assessment of those objects by comparing a number of scan return points that indicate that the object may enter the travel path to the number of the scan points that are received for that object.