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by Tondoteottotote on February 8th, 2005

Tondoteottotote

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Why do most 18-wheelers have manual transmissions instead of automatic transmissions?

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  • by mrblanche on August 17th, 2006

    mrblanche

    These days, the answer is that that is how it's always been done. Today, there are very dependable "auto-shifting" transmissions, which are actually the manual transmission with electronic and air-powered shifting. This is becoming more and more common, largely for safety reasons (a driver can concentrate on his turning instead of having to pay attention to gears), but also for fuel economy and lowered maintenance.

    My truck has a 13-speed manual, but if I were ordering it, I would order one of the auto-shifting transmissions.

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