[broguinn]

The above comment is getting downvoted, and I suspect it's due to a misunderstanding of their intent. Yes, high speeds can make collisions (especially, as another commenter points out, to pedestrians and cyclists) more dangerous. However, just as human drivers subconsciously speed up when part of a group of cars, they are not often conscious of the environmental queues informing the speed at which they drive. Given the poster's allusion to 'stroads', I suspect that they're in favor of traffic engineering patterns that encourage speed reduction based on safe context queues without solely relying on an unenforced and often unobeyed traffic speed.

Consider this video on Dutch traffic calming: https://www.youtube.com/watch?v=bAxRYrpbnuA.

Lane narrowing, raised walkways, curves in the road (chicanes), etc. are all environmental queues that enforce safe traffic speed based on context, without relying on conscious human compliance.