Non-revenue track (or trackage), or a non-revenue route, is a section of track or transport route that is not used to carry revenue-earning freight or goods nor for scheduled passenger services.[1] The term is used to refer mainly to sections of track or routes in public transport systems, such as rapid transit and tramway networks, but non-revenue track or routes can also be found in other transport systems. Non-revenue tracks may be used for revenue service during temporary reroutings.