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A clock-face schedule is a timetable where public means of transport run in consistent intervals, and as an extension programs lines to converge on hubs at a given point of the clock-face. A clock-face schedule is used in the New York City subway system, the London Underground, Merseyrail Northern and Wirral lines, and metropolitan transit. Its name comes from the fact that departures take place when the minute hand is at the same place every hour (e.g. 6:15, 7:15, 8:15, etc.) Regular timetables were first developed at the end of the 19th century for local public transport, such as Trams, Subways, and trains in the vicinity of large cities (e.g. New York City). The goal of clock-face schedules is to increase the attractiveness and versatility of public transport. They are easier to memorize for passengers, because departure times repeat. A constant schedule over the whole day can also improve service during off-peak hours. They can be attractive for transportation companies, because the repeating pattern makes more efficient use of personnel, infrastructure, and vehicles, and can make resource planning easier. The opposite of a clock-face schedule is a timetable that is purely driven by demand, with irregular headways. == Line-based == Each line can have an individual regular schedule, without connections to other lines. Even in this case it may be necessary to coordinate different means of transport if the mode of transport changes, for example at the terminal stop of a tram network, if the line continues by bus. This may, however, cause passengers to have to wait at the transfer point for any number of minutes until the next bus or train comes along. These timetables may be attractive even if they don't provide connections to other public transport, because they allow a continuous use of vehicles and personnel. Line-bound regular timetables are especially useful for lines with high service frequencies. If vehicles with the same destination follow each other in short intervals, transfer times are short even with delays. However, if the service intervals are 20 minutes or longer, lines usually should be coordinated. One simple way of doing this is to shift the departure times of one of the lines to match the other. 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「Clock-face scheduling」の詳細全文を読む スポンサード リンク
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