Black plate (37,1)Cadillac CTS Owner Manual (GMNA-Localizing-MidEast-8087697) - 2015 -crc - 6/17/14Driving and Operating 9-37Since each gap setting correspondsto a following time (Far, Medium,or Near), the following distance willvary based on vehicle speed. Thefaster the vehicle speed, the furtherback your vehicle will follow avehicle detected ahead. Considertraffic and weather conditions whenselecting the following gap. Therange of selectable gaps may not beappropriate for all drivers anddriving conditions.Changing the gap settingautomatically changes the alerttiming sensitivity (Far, Medium,or Near) for the Forward CollisionAlert (FCA) feature. See ForwardCollision Alert (FCA) System onpage 9-48.Alerting the DriverWithout Head-Up DisplayWith Head-Up DisplayIf ACC is engaged, driver actionmay be required when ACC cannotapply sufficient braking because ofapproaching a vehicle too rapidly.When this condition occurs, a seriesof red lights or the collision alertsymbol on the HUD, if equipped, willflash on the windshield. Either eightbeeps will sound from the front,or both sides of the Safety AlertSeat will pulse five times.See “Collision/Detection Systems”under Vehicle Personalization onpage 5-46.See Defensive Driving on page 9-3.Approaching and Following aVehicleThe vehicle ahead symbol is in theinstrument cluster and HUD display,if equipped.The vehicle ahead symbol onlydisplays when a vehicle is detectedin your vehicle’s path moving in thesame direction.If this symbol is not displaying, ACCwill not respond to or brake tovehicles ahead.ACC automatically slows the vehicledown and adjusts vehicle speed tofollow the vehicle in front at the