Have you guys(and gals) seen the new trailer called "Tongue Twister"? Its on page 15 in the October Landscape Management magazine. It has gates at both ends. The trailer pivits 40 degrees allowing both end gates to be used.
Its says in the article that it has a ram that moves the trailer 40 degrees in either direction. I would think you could keep the truck almost straight and swivel it 40 degrees to access the front gate. It looks neat but a side gate would be alot less money and just as useful.
I have an 1969 Alloy single snomobile trailer that does the same thing.You drive on from the back and off the front. The tongue has like a universal joint that allows it to dump and piviot almost 90 degrees to dump and unload from the front.I agree the side gate seems simpler and easier to use.
if the trailer is rammed forty degrees and the truck is straight, the trailer is still going to jutt its back gate out towards the center of the road. dont know how efficient that would be on a busy road