Most commonly to transfer force (like the breaks in your car).
Hydraulics
Yes, they can use hydraulics.
There're many ways to help Transportation system by mean of hydraulics. Sometimes it's Direct application: Like use hydraulics to transport sand, coal, Ash, concrete, oil. Either way to use Hydraulic motors In EOT/HOT Crane, Hydraulic lift, flexible shaft machines. Also in future it can be also be able to transport Human from one land to another. Otherwise indirect application: Automobile vehicles, to operate valves in transportation system, Control transportation by mean of hydraulics, for suspension in Vehicle & machines.
Liquid is needed to use hydraulics. It's what makes hydraulics work.
it runs with hydraulics .the hydraulics contains some oil immersion , fluids.
Cars use hydraulics in the brakes and steering, and planes use hydraulics by adjusting the wings and rising and lowering the landing gear :P
Megadiggers, cranes, trencher/rotating shovel and diggers. Mountain bikes and car brakes use Hydraulics too.
From backyard log splitters to the huge machines you see on construction sites, hydraulic equipment is amazing in its strength ­and agility! On any construction site you see hydraulically operated machinery in the form of bulldozers,backhoes, shovels, loaders, fork lifts and cranes. Hydraulics operate the control surfaces on any large airplane. You see hydraulics at car service centers lifting the cars so that mechanics can work underneath them, and many elevators are hydraulically operated using the same technique. Even the brakes in your car use hydraulics!!!
Machines of all types need power. Power allows the machines to do specific kinds of work. Two of the most efficient and compact forms of power for machines are hydraulic and pneumatic systems. Hydraulics and pneumatics can be configured into different types of power sources to lift, lower, pull, push, turn, rotate and move machines carrying tremendous loads. Tools can also be powered to break stone, join steel and cut wood. Hydraulics and pneumatics provide the energy to make work happen.
In cars, air planes, boats and also many constructional machines.
Hydraulics is the use of liquids to transmit power. Pneumatics is the use of gases (usually air) to transmit power.
Presses, earth moving equipment and farming machinery, hydraulics is used because it take up less space than the gears that is needed to produce the same power and if hydraulics is treated correct then there is almost no maintenance necessary