翻訳と辞書 Words near each other ・ Tokelau (islet) ・ Tokelau at the 2011 Pacific Games ・ Tokelau at the 2015 Pacific Games ・ Tokelau at the Commonwealth Games ・ Tokelau national rugby league team ・ Tokelau national rugby union team (sevens) ・ Tokelau Scholarship Scheme ・ Tokelau Table Tennis Association ・ Tokelau, Tuvalu ・ Tokelauan general election, 2008 ・ Tokelauan language ・ Tokelauan self-determination referendum, 2006 ・ Tokelauan self-determination referendum, 2007 ・ Tokelo Rantie ・ Token ・ Token (railway signalling) ・ Token bucket ・ Token bus network ・ Token coin ・ Token Creek, Wisconsin ・ Token economy ・ Token Homemate Cup ・ Token money ・ Token of Darkness ・ Token passing ・ Token Racing ・ Token reconfiguration ・ Token ring ・ Tokenism ・ Tokenization Dictionary Lists mini英和辞書 mini和英辞書 Webster 1913 Latin-English FOLDOC Wikipedia English ウィキペディア

翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Token (railway signalling) ： ウィキペディア英語版 Token (railway signalling) In railway signalling, a token is a physical object which a locomotive driver is required to have or see before entering onto a particular section of single track. The token is clearly endorsed with the name of the section it belongs to. A token system is used for single lines because of the very much greater risk of serious collision in the event of irregular working by signalmen or traincrews, than on double lines. == Principle == The operation of a bidirectional single track line has obvious problems, the most serious of which is the possibility of two trains traversing the line travelling towards each other, each driver unaware that the other is using the line. The simplest method of controlling such a line is to have only one engine operational, on the basis that a single train cannot collide with itself, and in the absence of another engine, there is nothing else for it to collide with. Such a system is known as "one engine in steam". Such schemes were used, and indeed still are used on some branches of rail networks, and on heritage railways. The main problem with such a scheme is that it is best suited to a completely isolated branch of single track line. Where the section has to be integrated into a larger railway system, it becomes exceptionally limiting in the level of operations that it allows, and the opportunity for a mistake to be made, and an ensuing accident to occur, is high. Instead, reliance is placed not on employing only one engine but on having a single physical object available for the single track section, and ruling that only if an engine driver is in physical possession of that object may they enter the single line section. That object is known as a token and is marked to indicate to which single track section it belongs. 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「Token (railway signalling)」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.