A pneumatic regenerative system for a railway vehicle, the railway vehicle including a locomotive with a main drive mechanism, and the railway vehicle including plurality of axles (112 -112) that rotate when the railway vehicle is propelled along a railway, the system comprising: a) a plurality of pneumatic drive mechanisms (118 - 118), each pneumatic drive mechanism (118 - 118) mechanically coupled to one of the plurality of axles (112 -112) of the railway vehicle, one of the plurality of pneumatic drive mechanisms (118 - 118) being coupled to a one of the plurality of axles of the railway vehicle which is not mechanically driven by the main drive mechanism of the locomotive, each pneumatic drive mechanism (118 - 118) comprising: a) an accumulator (210) that is operable to receive and store pressurized air; characterised in that each pneumatic drive mechanism (118 -118) comprises b) a pneumatic device (206) operably coupled to one of the plurality of axles (112 -112) and the accumulator (210), the device operable in a first configuration, where the device is driven by rotation of the one of the plurality of axles during a braking operation of the railway vehicle to generate and store pressurized air in the accumulator (210), and a second configuration, where the pneumatic device (206) receives pressurized air from the accumulator (210) to drive rotation of the one of the plurality of axles (112 -112) during an acceleration operation of the railway vehicle; c) wherein each pneumatic drive mechanism (118 - 118) further comprises a heat exchanger (212) disposed between the pneumatic device (206) and the accumulator (210), where the heat exchanger (212) is in fluid communication with the pneumatic device (206) and the accumulator (210) and a heat storage apparatus (214) coupled to the heat exchanger (212), where the heat storage apparatus (214) is in thermal communication with the heat exchanger (212). a) a plurality of pneumatic drive mechanisms (118 - 118), each pneumatic drive mechanism (118 - 118) mechanically coupled to one of the plurality of axles (112 -112) of the railway vehicle, one of the plurality of pneumatic drive mechanisms (118 - 118) being coupled to a one of the plurality of axles of the railway vehicle which is not mechanically driven by the main drive mechanism of the locomotive, each pneumatic drive mechanism (118 - 118) comprising: a) an accumulator (210) that is operable to receive and store pressurized air; characterised in that each pneumatic drive mechanism (118 -118) comprises b) a pneumatic device (206) operably coupled to one of the plurality of axles (112 -112) and the accumulator (210), the device operable in a first configuration, where the device is driven by rotation of the one of the plurality of axles during a braking operation of the railway vehicle to generate and store pressurized air in the accumulator (210), and a second configuration, where the pneumatic device (206) receives pressurized air from the accumulator (210) to drive rotation of the one of the plurality of axles (112 -112) during an acceleration operation of the railway vehicle; c) wherein each pneumatic drive mechanism (118 - 118) further comprises a heat exchanger (212) disposed between the pneumatic device (206) and the accumulator (210), where the heat exchanger (212) is in fluid communication with the pneumatic device (206) and the accumulator (210) and a heat storage apparatus (214) coupled to the heat exchanger (212), where the heat storage apparatus (214) is in thermal communication with the heat exchanger (212). a) an accumulator (210) that is operable to receive and store pressurized air; characterised in that each pneumatic drive mechanism (118 -118) comprises b) a pneumatic device (206) operably coupled to one of the plurality of axles (112 -112) and the accumulator (210), the device operable in a first configuration, where the device is driven by rotation of the one of the plurality of axles during a braking operation of the railway vehicle to generate and store pressurized air in the accumulator (210), and a second configuration, where the pneumatic device (206) receives pressurized air from the accumulator (210) to drive rotation of the one of the plurality of axles (112 -112) during an acceleration operation of the railway vehicle; c) wherein each pneumatic drive mechanism (118 - 118) further comprises a heat exchanger (212) disposed between the pneumatic device (206) and the accumulator (210), where the heat exchanger (212) is in fluid communication with the pneumatic device (206) and the accumulator (210) and a heat storage apparatus (214) coupled to the heat exchanger (212), where the heat storage apparatus (214) is in thermal communication with the heat exchanger (212).