>I don't know what the purpose is but I strongly suspect that they add a great
>deal to the structural integrity of the bus.  If you look at them closely
>they're welded in and have what looks like a major support bar running along
>
 
But how are walk-thru busses supported?

Thom
-- 
>> Work is for people who don't know how to surf.
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:    Thom Fitzpatrick                             Transamerica Info Mgmnt  :
:  Systems Administrator                          1860 Howe Ave            :
:  tfitzpatrick@tim.com                           Sacramento, CA 95825     :
:   fax (916) 921-6781                            (916) 565-3346           :
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