starting to be more common now since the lenght rules on b doubles were increased from 25 to 26 meters although no extra trailer lenght. this is the kenworth k104 with the 2.9 meter cabin the short ones were 2.3 seems to be plenty of room. these things run big ■■■■■■■ or cat motors. sorry no interior pics on the web but they are huge in side.
enjoy
meggala
this is the standard size.
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I did see a very interesting trailer setup which is about to be approved for close to the docks two trailers to carry two 40’ containers. they allowed this because of new technology with steering rear axles. they will be bogie ont he drive and quad ont he traliers some nice weight there. I will try and get a pic for you guys.