All Transportation And Locomotives

This group gathers mechanical engineering inventions whose primary function is moving people or goods, including railway locomotives and named trains, automobiles and their axle and drivetrain assemblies, bicycles, braking and steering systems, tires, and vehicle safety mechanisms such as airbags, alongside the stirrup and the wheelbarrow as early mechanical aids to movement. Their shared work is enabling or supporting locomotion itself, as distinct from the stationary engines, machine tools and manufacturing equipment gathered under Industrial Machinery And Power.