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Network Rail (NR) has an obligation, transferred from the abolished Strategic Rail Authority, to periodically produce Route Utilisation Strategy (RUS) documents.〔(NR's introduction to the process )〕 The current programme was approved by the Office of Rail Regulation (ORR) in June 2006;〔(ORR letter approving the programme )〕 under an early version of the programme all but two RUSs were scheduled to be completed by the end of Control Period 3 (CP3), 31 March 2009.〔(NR letter to ORR on RUS programme )〕 The programme is reviewed by NR and ORR at regular intervals;〔(Network Rail letter to ORR on programme rescheduling )〕〔(ORR letter approving the revised programme )〕 despite this the delivery timescales have continually slipped. At the end of CP3 no fewer than 9 (almost half) remained incomplete (still in progress or not yet established), despite the fact that funding for infrastructure developments in CP4 was largely set.〔(NR CP4 Delivery Plan )〕 One RUS, the Network RUS, was broken into four workstreams, with a fifth added, apparently, in 2011.〔(Network RUS introductory page )〕 As of mid-April 2011, 16 RUSs and two Network workstreams had been published and established, two RUSs were in draft (following the consultation period), and the other Network RUS workstreams were at an earlier stage, two with drafts supposedly expected in "Early 2011". Late in 2009 NR announced a second generation of RUSs.〔(NR introduction to second generation RUSs )〕 As of mid-April 2011 these are in draft, beyond draft consultation phase. ==Approach and outputs== All but two RUSs are geographical, mainly regional, in nature. The exceptions are the Freight RUS and the Network RUS, which have the perspective of the network as whole. The non-regional geographical studies include the East Coast Main Line RUS and West Coast Main Line RUS, which penetrate Scotland and regions which have their own RUS. All RUSs consider the demands of freight transport, but the Freight RUS looks at the implications of major freight flows for Great Britain as a whole. The Network RUS is divided into four largely self-contained workstreams: long-distance traffic and generic cross-RUS issues; stations; rolling stock and depots; electrification. The first stage of each strategy is the preparation and publishing of a scoping document, which is usually produced after a few months. The main part of the study takes place over a period of a year or two, and this concludes with the production and distribution of a draft strategy document. About 12 weeks are allowed for consultation and responses from rail industry and other entities, following which the final strategy is developed and a final version is published. This is later established by the ORR, unless they have reason to object to the final version. The scoping document is usually fairly short, sometimes in the form of a presentation. The strategy document itself normally consists of a fairly standard number of sections: an introduction and explanation of context; a fairly detailed presentation of current services; a forecast of future changes (overwhelmingly increases) in demand; gaps in resources; options for satisfying the demand; the recommended strategy. Other sections may be included, including a section on the consultation process itself specifically in the draft strategy. The strategies developed so far are related to the Network Rail Control Periods (CP). Up to the publication of the Wales RUS (November 2008), 'short-term' strategy included those initiatives to the end of CP3; as this finished on 31 March 2009, the short-term activities mentioned in these strategies were mostly underway, at least in the planning process. In general strategies have an approximate 10 year timescale, taking them into a "long term" corresponding with CP5 (ending in 2019). Strategies from 2009 present specific initiatives towards the end of that period, and sometimes into the next; CP4 (ending in 2014) is the new short term perspective. Network Rail has an obligation to maintain RUSs, even after establishment. This would be the case in one or more of the following situations: when there has been a change in circumstances; if ordered to by the ORR; when (for whatever reason) it is clear the recommendations are probably no longer valid. The RUS is revisited using the same methodology. However, in only one case, the East Coast Main Line, has an original RUS been supplemented by a further study. Nevertheless, a further generation of three RUSs are underway, two of them covering a much broader geographical area than the originals, together with an extended timescale. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Route Utilisation Strategy」の詳細全文を読む スポンサード リンク
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