Cookies and We use cookies to give you the best experience on our website. If you continue, we'll assume that you are happy to receive them.
You can read more about how we use cookies, and turn them off, on this page.

  • Gradients

  • Box Tunnel, between Bath and Chippenham

    The gradient on a route affects the power to weight ratio necessary to operate a train effectively and efficiently.

    Additional locomotives may be required on occasions to assist heavy freight trains over routes with steep gradients.

    Details of loads which can be conveyed and any requirement for an assisting locomotive is provided for train operators in the Freight Train Loads books. If you do not have access to these please email our access coordinator to establish the relevant requirements.

    Gradients on the main line network may reach as steep as 1 in 37.

    The effect of gradients and the power of the locomotive(s) is factored into the train planning process to provide scheduled transit times for freight trains.