Anyone wishing to use a structural subsystem on the mainline railway – infrastructure or rail vehicle – must get an authorisation from us before putting the subsystem into use.
This is dictated by the nature and complexity of your project and your familiarity with rail standards and legislation. As a general rule, it is helpful if you engage with us as soon as possible, once you are aware of how your project will have an impact on railway safety, infrastructure, operations etc. In particular, if you have any concerns regarding safety, interoperability, access or