Why can't this be one of many tools in designing the environment to accommodate multiple road users? And isn't it better to design the road to encourage safe driving rather than designing a system designed solely to punish users who do something against the rules?

35mph is presumably the upper limit, not the lower one. Perhaps the goal is to make cars go even slower than that when going over the crossing.

>35mph is presumably the upper limit

Yeah. I'd wager that they will not be pleased when they catch some teenager catching air in his shitbox at 34.9mph.

> I also wouldn't want to drive over a speed bump at 35m

... yes, that’s the point.

I get that.

What if they put speed bumps on the motorway/freeway, to slow everyone down for roadworks?

FTA "and was built to slow cars to 35 miles per hour"

Yes use speed bumps to slow people to 20mph, not 35mph.

Your argument seems to center around you conflating various traffic calming measures. If you look at the pictures in the article you will see that they are depicting a speed table, not a speed bump. Speed tables are longer and gentler than a speed bump, and designed to slow the vehicles down less than a speed bump or speed hump. I agree that 35mph is a bit high for most speed tables, but 30mph would not be out of place for such a device.

Obviously hitting a speed bump at 35mph would be a very bad experience, but that's a different device than what's represented in the article.