Electriduct Speed Nubs Safety Bump Rumble Strips Kit: 4 Black Sections - Total Length: 79"

So far, the wife backing out of our drive hasn't hit the wall, but these are the perfect feelers preventing that possibility. It also provides large nails and glue, but laying them out there for the purpose in your garage or drive without them is fine, they don't move. If they do, just use the minimum glue, just enough to keep them from sliding. Yellow color is hardly noticeable from the street making them unobtrusive.

I guess I didn't think about how small these things actually were before I got them. They are tiny. I can feel them when driving over them with my car (just in my driveway as markers) but I would NOT call them "Speed Bumps". Use as a rumble strip seems applicable but you'd be better off with something a bit bigger. These are only OK as markers.

Described as made of rubber, this item sure looks and feels like hard plastic. There is no flex over uneven or rounded surfaces. As a rumble strip, IMHO, it's useless unless multiple strips are installed repeatedly over a distance where traffic moves at 40-50 mph, not a garage or parking lot.

these are slimmer (vertically) than I thought/would like, I'd like more of a hump. however, I threw these down on the garage floor (did not bolt them down) and they stay in place fine (which is what i worried about) and tell us when to stop pulling forward. Simple, rugged, do what you want them to do. only four stars because I haven't tried to bolt them down, and because they are simply so low: if you're not paying attention, you can glide right over them without noticing. but if all you need is a slight bump, buy these.

We have a spot where 2 slabs of concrete meet and have become uneven. We put these 2 rumble strips down (using extra glue bought from local hardware store) and the kids no longer fall of their bikes when riding over this spot.

I bought it as a parking aid. If my tire touched it, that would tell I was close to the wall and it was time to stop. But even at low speed, I went over it and didn't even feel it. I do have medium profile tires though.

During the first rain, these speed bumps floated and did not deter the rain water from going into the garage. I was very disappointed.

Lucky Me No more hitting the back of the garage LOL