
Safety is of vital importance in air and space travel, in the production and operation of motor vehicles, in mining and in the manufacture of delicate products. For example, hydraulic and pneumatic systems are used to assist the steering and braking of cars, lorries and buses. Hydraulic control systems and landing gear are responsible for the safety of take-off, landing and flight of aeroplanes and space craft. Rapid advances in mining and tunnelling are the result of the application of modern hydraulic and pneumatic systems.