mode, and gives you the proper gear for decreasing engine On the other hand, if you want to downshift, the computer assumes you wish to overtake, and gives you a proper gear for acceleration. There's an automatic version which works like the Tiptronic system found in Mercedes-Benz cars. The fourth-version launched in 2011 offers exclusively the 12-speed Powershift transmission. Operation The system consists of a small lever mounted under the right armrest and a flat switch underneath. The lever is slightly tilted, so that it matches the natural curve of the driver's hand when it's on the armrest. The lever has two buttons on either side. When at a standstill, the driver must push the right button, then (while holding it), push the lever forward and release it select fourth fast. The current gear is shown as a large number on the main display. After doing this, the driver steps on the clutch pedal and waits for approximately two seconds. After the gearshift has completed, a double click is sounded through the speakers, and the driver proceeds with pulling off as normal. Once moving, the driver has two choices. He or she may push or pull the lever to let the computer choose the gear for them, or they can use the splitter switch (the small switch under the lever) to pre-select gears. Either way, the gear is selected first, then the clutch is depressed. For example, if you're in fourth fast, pulling the splitter switch up once pre-selects fifth slow. The left button (known as the 'flush button', as it is flush with the lever) is used to switch to neutral. Cabin The Actros cabs come in four types: S - designed for daily operation and construction vehicles such as cement trucks. The daily cab has its front bumper lower to the ground to prevent under-run, whereas the construction version of the S cab has its front bumper higher to prevent hitting an obstacle when driving off-road on the site. M - designed for distribution vehicles. It offers a sleeper, though comfort has not been focused on as in the L cab. It comes in short and long sleeper versions. L - Low-roof long-haul cab, providing comfortable driving and rest for the driver. LH "MegaSpace" - Long-haul high-roof cab, providing comfort for long driving, as well as enough space for the driver and/or passenger to freely move around the