Loading cargoAll cargo being loaded (except when using a forklift) can be controllably rotated CW and CCW. Tested with heavy cargo transportation jobs, though it also causes some glitches regarding shown requirements, so it's probably best to avoid such exploits. And they don't need vehicles for this, you can even sell a required vehicle after accepting a job - and virtual worker would still be able to do it. There are some exceptions, however a hired worker can complete any stage, because they don't do any actual work like you, but rather simply fill a progress bar. Note that having vehicles with sufficient tiers only makes jobs available, it doesn't necessarily mean it will be easily accomplishable or that you will be able to complete it yourself. Tiers are important for cranes and excavators concrete, drilling, rolling, bulk cargo and container tasks have no tiers other transportation is mostly limited by what cargo or vehicles can adequately be placed onto a trailer or a truck. Jobs also have similar icons, and in order to accept a job you have to own vehicles of required tier or higher. These icons show what type of task a vehicle is associated with and the tier of such task. TiersYou buy vehicles from Vehicle Dealer, and there are icons in the list there, with some numbers. As I progress, respective sections are filled with such information. I am doing my best to find information about how all these vehicles are controlled in real life (not just the joysticks), and trying to figure out ways of setting up more or less realistic controls for the game, even if keyboard is the only option. I used to rely on animation for figuring out realistic controls until I found out about this flaw. While some functions are represented correctly, others are not. The game features joystick animation that looks really nice. Though to make any of it actually realistic you also need to know which joystick does what and by moving in which direction. If you have a gamepad, you can probably use it's sticks similar to joysticks. I know someone actually did so for excavator, remember reading about it in discussions.
In real life a lot of these vehicles are controlled with joysticks, so if you have two avia sim joysticks, you can set up controls for many vehicles in the most realistic way.