Who invented speed bumps?

If they’re made of asphalt, yeah, but you’ll need a lot of gasolene (unless, of course, you decide to light the gasolene after pouring it on, in which case, you’ll need a quick escape route). Note: Destroying speed bumps, humps, and grinds is vandalism and is illegal, and considering the high price of gasolene these days, not a “cheap date” activity at all.

Based on your description, I think I can safely say no, he doesn’t mean cat eyes. Botts dots are bumps on the ground. It sounds like you’re talking about some kind of fitting for a headlight or lamppost.

We are paying all those taxes for road building, maintenance and research.

The bumps destroy our cars and make the ride much harsher. I am wondering if speed bumps are legal (or moral).

When I was in high school. the administration had several of these speed bumps installed. These were the smaller, 12" wide by 6" high ones and were universally hated by all driving students.

The morning of the first snow, the maintainance crew at the school accidentally plowed all of the bumps away and they couldn’t be reinstalled until the spring.

There was much rejoicing.

Not sure how long they have been around here, but it is standard practice in response to complaints by residents to put them in residential streets if there is a problem with speeding traffic or traffic taking short cuts in large numbers. Police are not particularly sparse here.

According to this article on speed bumps, traffic claming was implemented in UK and Australia before the 1970’s. They have certainly been around a long time in Australia. Almost every well travelled suburban side street in my home city has either speed bumps, humps, roundabouts or chicanes to slow traffic.

Here is some information on cat’s eyes. As you can see they were invented before WW2. :- http://www.design-technology.info/inventors/page14.htm

Some streets around here have not bumps, but dips. The primary purpose is to carry water across a street into a storm drain on the other side, but they are quite effective at slowing you down also. There is one that really needs to be redone though; it has such a sharp angle that my car can’t negotiate it without scraping the underside. I don’t usually need to drive there, at least.

I heard recently about a new variety of speed bump that drivers might be subjected to in the future.

Basically the bump part is constructed from a very tough inflatable bladder connected to a special outlet valve. If you drive over it slowly, the air inside is let out of the valve and you get a nice smooth ride, as if there was no bump at all. If you drive over too fast, the valve doesn’t have time to let the air out and you get a nasty bump. The “bump activation speed” is configurable too.

Dunno how the thing reinflates afterwards though.

Not to beat a dead horse, but they’re called “sleeping policemen” in Jamaica, too. (they also drive on the wrong side of the road there)

All I know is that when I was in high school, we determined that if you drive over a speed bump (not the monster “speed humps,” just the regular bumps) at three times the speed they’re designed to slow you down to, you don’t feel them at all.

Do I need to mention how fast we drove?

No they don’t . They drive on the left side of the road which is the correct side. :slight_smile: