Interesting, (standby typing)
My ACC routinely stops in around town driving. I prefer to stop myself more gently, but ACC immediately slows an stops if the car in front does.
Now, if the car is way out in front, the VOLT does not react until it picks it up, and that result is rough at best to my taste.
Based on my experience with my 2017 w/ACC the statement "ACC will not pick up a stopped vehicle" is correct. The Volt's ACC system is not capable of tracking a stationary object whether fully stopped vehicle, large trash container, clothing donation box, etc.
Scenario 1: You are following a vehicle in the middle lane of three lanes of traffic using ACC. The vehicle ahead slows as you approach a traffic signal that is red with vehicles stopped ahead. At the last second the vehicle in front of you changes lanes, moving to the right lane to turn right at the intersection. The Volt's ACC absolutely will not be able to determine that one or more stopped vehicles are now directly in your path, in fact the ACC will attempt to accelerate to the ACC set speed. Yikes! You need to be alert and ready to disengage ACC and manually apply the brakes anytime you are in potential stop and go traffic.
Scenario 2: You are using ACC on a secondary road, traveling at 30 mph, and come to the crest of a hill. As you come over the hill you see a slow moving or stopped vehicle ahead. The Volt's ACC camera and radar sensors are at first pointed too high, then pointed too low, to see the vehicle that is now in your path. To avoid a panic stop and collision warning alert you need to disengage the ACC and manually apply the brakes as soon as you see the traffic that lies ahead that the Volt has not yet detected.
Scenario 3: You are using ACC on a secondary road, traveling at 30 mph, and come around a curve. As you come around the curve you see a slow moving or stopped vehicle ahead. The Volt's ACC camera and radar sensors are pointed wide of the curving road ahead and cannot see the vehicle that is now in your path. To avoid a panic stop and collision warning alert you need to disengage the ACC and manually apply the brakes as soon as you see the traffic that lies around the curve in case the Volt has not detected the vehicle.
Scenario 4: You are using ACC on a highway, traveling at 70 mph, and come to the crest of a hill or come around a curve. You are able to see 800 or so yards ahead and see that traffic is backed up ahead, has slowed to a crawl in all forward lanes. The Volt's ACC camera and radar sensors are not able to see that far ahead. To avoid a panic stop and collision warning alert, probable collision, in spite of having forward automatic braking you need to disengage the ACC, use the regen paddle if desired, and get ready manually apply the brakes as soon as you see the traffic that lies ahead has stopped or has significantly slowed. (If traffic ahead has only slowed, not fully stopped, you can drop your speed to the prevailing speed of the other vehicles and then resume ACC at the lower speed as you reach the area of traffic congestion as long as the vehicle ahead of you is not fully stopped.)
