rumor has it that David wrote:
> I dunno, personally I think the dump trailers in Washington state that
> have 12 foot long tongues are pretty weird! I assume the weight limits
> there must be based on length?
Kinda. It's probably because of what called "bridge law" and because
it's practical - and it's not just it WA.
Bridge law: (CAUTION: This is a super simplified version!!) The maximum
allowed gross vehicle weight in reduced if the distance between axles
is not enough. Thus a 5-axle truck/trailer is normally limited to
80,000 lbs GVW., but if it's a really short trailer it will be
overweight if the GVW is 80,000 lbs.
Practical reason. The truck can dump _without_ unhitching from the
trailer.
Philip, always happy to drive past a weight scale.
