VEVOR Portable Speed Bump, 9.8 Ft Length Speed Hump, 8.66" W x 1.97" H Rubber Reflective Speed Bumps for Asphalt Concrete Gravel Driveway Roads Parking Lot Used On Car, Truck, Bus, Trailer, Streets
Is there a specification on how much weight can run over these.
Do these have to be screwed to the ground?
Are there a different version for the roadway?
It can bear a weight of 3 tons. If the speed is very slow, you don't have to screw it to the ground. We do have other versions for the roadway, you can search it on our website.