About a month or so ago, My exhaust was banged on the bottom of a speedbump around my area.. Must of been loose or something, because it was hanging off, and had to have it re-welded on.. Was gonna contact council or whoever, as I wasnt go fast (About 10mph), but had a full car (5 people in a fiesta
).. But ended up never bothering as my cousin thought it was no use.
As someone said above, im the type of driver that'l slow down for the Speedbump, then Speed up inbetween.. which I guess is more dangerous than having them therein the first place!