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It's an explanation of how cruise control works. It sounds like cruise control is dangerous to use in Germany, based on your description. My 2012 VW GLI certai

It's an explanation of how cruise control works. It sounds like cruise control is dangerous to use in Germany, based on your description. My 2012 VW GLI certainly did not stay within 3km/h of the set speed when utilizing cruise control. >If that means going up to 6mph too slow, I guess that's the way it is. If you want to be in a situation that is more dangerous than going 3mph over the limit, sure. If everyone was going 6mph under the limit this would be fine, but staying closer to the speed of traffic around you is less likely to cause accidents than going significantly slower. (Which, surely, if 3mph is significant, than 6mph is even more so) >With electric cars, regulating the speed smoothly will be even easier. I agree here. That just means solving the speed determination issue, which is not simple. GPS is the best method we have now, but is very problematic if there is no signal, or a degraded signal.

DataWorker 9y ago
This would seem like a major problem then. In Silicon Valley it’s very common for freeway traffic to move at speeds that are 10 or 20 mph above posted limits. You either stay under the limit creating a dangerous situation as the result of differential speed or violate the limit and match the speed of surrounding traffic. How does the engineer not become liable in this context, like the VW engineers in the emissions scandle.
TheCoelacanth 9y ago
> It sounds like cruise control is dangerous to use in Germany, based on your description. My 2012 VW GLI certainly did not stay within 3km/h of the set speed when utilizing cruise control. You don't need to stay within 3km/h of the speed limit to follow the law. You need to stay below 3km/h over the speed limit. So if your cruise control has a variance of 5km/h, you should set your cruise control at 2km/h below the speed limit. > If you want to be in a situation that is more dangerous than going 3mph over the limit, sure. If everyone was going 6mph under the limit this would be fine, but staying closer to the speed of traffic around you is less likely to cause accidents than going significantly slower. Unless your cruise control has a significantly larger variance than all of the other vehicles, you should be fine because everyone else should be setting their cruise control to roughly the same thing as you.

DataWorker 9y ago

This would seem like a major problem then. In Silicon Valley it’s very common for freeway traffic to move at speeds that are 10 or 20 mph above posted limits. You either stay under the limit creating a dangerous situation as the result of differential speed or violate the limit and match the speed of surrounding traffic. How does the engineer not become liable in this context, like the VW engineers in the emissions scandle.

TheCoelacanth 9y ago

> It sounds like cruise control is dangerous to use in Germany, based on your description. My 2012 VW GLI certainly did not stay within 3km/h of the set speed when utilizing cruise control. You don't need to stay within 3km/h of the speed limit to follow the law. You need to stay below 3km/h over the speed limit. So if your cruise control has a variance of 5km/h, you should set your cruise control at 2km/h below the speed limit. > If you want to be in a situation that is more dangerous than going 3mph over the limit, sure. If everyone was going 6mph under the limit this would be fine, but staying closer to the speed of traffic around you is less likely to cause accidents than going significantly slower. Unless your cruise control has a significantly larger variance than all of the other vehicles, you should be fine because everyone else should be setting their cruise control to roughly the same thing as you.