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	Introduction     Database      Technologies    Projects     Calendar     Discussions     Contact & Links     Imprint & Disclaimer     Sitemap	go back to technology list       previous technology  next technology     Demixing of railway infrastructure  evaluated   At present many railway lines have a mixed operation, i.e. trains with big speed differences run on the same lines. In an effort to increase capacity without investing in additional infrastructure, infrastructure operators try to “demix” their infrastructure by restricting trains to specific tracks according to average speed. Improved traffic fluidity may reduce energy consumption. Technology field: Energy efficient driving General information General criteria   Status of development: not applicable   Time horizon for broad application: not applicable   Expected technological development: not applicable   Benefits (other than environmental): big   Barriers: medium   Applicability for railway segments: high     Type of traction:  electric - DC, electric - AC, diesel     Type of transportation:  passenger - main lines, passenger - high speed, passenger - regional lines, passenger - suburban lines, freight     Grade of diffusion into railway markets:   Diffusion into relevant segment of fleet: not applicable   Share of newly purchased stock: not applicable   Market potential (railways): not applicable Environmental criteria Economic criteria   Vehicle - fix costs: none     Demixing is a measure only concerning infrastructure, not rolling stock.   Vehicle - running costs: minor reduction     (no details available)   Infrastructure - fix costs: low     Since demixing is an effort to exploit existing infrastructure up to the maximum, investment in new infrastructure can be substantially reduced. New infrastructure will be much cheaper if planned for demixed traffic in the first place since additional infrastructure for train passing is not required on demixed lines.   Infrastructure - running costs: reduced     Raising train capacity reduces specific infrastructure costs, i.e. infrastructure costs per passenger-km or ton-km supplied on this infrastructure. But even the absolute running costs are reduced, because demixing favors a lean infrastructure, since additional tracks for train passing are not required and each line has to meet the requirements of one traffic class only.   Scale effects: none     (no details available)   Amortisation: not applicable     (no details available) Application outside railway sector (this technology is railway specific) Overall rating References / Links:  Fricke et al. 2000;  Fricke, Janiak 1996;  Ilgmann 1998 Attachments: Related projects: Contact persons:  date created: 2002-10-09     © UIC - International Union of Railways 2003			Your contribution    add technology  Views of this page    show overview    show evaluation    show details  Print options    print data sheet    print screen  Help    Evaluation briefing    Technology list     French - German