Make sure you have the extra resistant one, one that can last for a long duration of time.
I guess it depends on your car and the type of speedbump (daft as it sounds). The first thing to hit the hump is your wheel, a friend of mine buckled his ford alloys on some early this year. Second thing to happen is the front suspension compresses. Too fast and this could break a spring or mounting, it could break your track rod or at least buckle it or another component like the anti-roll bar. As the car comes off the hump it is possible the front nose hits the road possibly damaging the front bodywork, or worse, the sump. The rear end doesn't suffer as much because most of the weight is at the front (unless you have a rear engined car like a beetle or 911). The exhaust pipe could also suffer at any point going over a bump too fast and i've seen one get torn off from the manifold. As far as optimum speed goes, the slower the better. I would also drive all the car over it as it reduces the possibility of body flex.
is it illegal to use fire trucks during an illegal conduct of parade or procession?
He may well have arranged with the city, or whoever it is, to do that. They do here, anyway. We're sometimes host to a steam engine rally and the organisers arrange with the water company, whose hydrants they are here at least, for anyone attending with a steam engine to be allowed to couple up to a hydrant to refill their tanks en route. They also allow the water tanker which is kept on site for top-ups and emergencies through sparks and so on to be kept filled. As any money made goes directly to charity the water company do not charge for this. We rely on anyone doing this to be intelligent enough to stop if they hear the fire siren or see the trucks on their way somewhere, and there's never been a problem. The law here states It is illegal to use a fire hydrant to obtain water for purposes other than fire fighting, unless authorised by the water authority or other person to whom the hydrant belongs.
