ArvinMeritor has announced that it will stop making manual transmissions for heavy trucks, and focus instead on the production of automated transmissions.

According to a press release, the company will still produce manual transmissions ordered before September, and will continue to provide support for its manual products after production ceases.

Mike Pennington, a spokesman for ArvinMeritor, told Today's Trucking the automated transmissions are easier to use and more popular with fleets, since they're easier for new truck drivers to learn.