I suspect the logic is, 25MPH (40km/h) is residential speed limit. In a school zone, the speeds are lower because they want drivers paying extra attention. Setting CC for 15MPH or 30km/h removes a degree of attention in an area where extra attention is warranted.
Mine will in adaptive cruise mode, but not in standard mode. I tried it today. I was able to drop the speed to 22 MPH, but because of traffic I couldn't try lower.
Have you tried setting it to the lowest allowable setting and then using the minus feature to drop it down to what you want? I will have to try that myself the next time I am out and about to see if that might work.
I did try that in the standard cruise mode, and it doesn't work. It does work with Adaptive mode enabled, but of course not all cars have adaptive cruise.
I strongly disagree with this. One of the challenges I have in the Bolt is that it's difficult to know what speed you're going without glancing at the speedometer. There's no engine noise that changes pitch with speed, so I find myself having to pay closer attention to the speedometer than in any of my other cars. Looking at the speedometer means not paying as much attention to the road ahead. If I could set the cruise control to 30km/h then it would remove the distraction of having to check the speedo as much.
Mostly we drive on two lane roads. If others are ahead, and behind, I just maintain a safe distance from the car in front, and hope those behind will do the same. If nobody is around, I always use CC because otherwise I will invariably end up speeding, with no audio cues...at least none an old guy can hear.
