They do alot of truckload on the dry vans but if I remember rightly from my trainer they did alot of LTL on the refrigerated side of it. Or as they called it the Temperature controlled Fleet. But that was over three years ago when he told me about it and he had been off that fleet for a couple of years doing the walmart dedicated
TCU is the heaviest LTL of any of the divisions as far as I know. I've run all three and the only time I ran LTL was pulling wal-mart reefers (excellent gig if you live in the recruiting area)