Originally posted by tuxluvr
a) accidentally step on the speed bump and make its alarm go off (A LOUD HORRIFYING SOUND) OR
Yes, I was going to say another one of the differences with the concrete types is that these speedbumps hiss when accidentally stepped on making both hisser and hissee move faster than either thought they ever could, due to the daylights being scared out of both of them! Not a good thing in the middle of the night.