Цитата:
Сообщение от Вазюк
"...На ПАБ на перегоне может быть только 1 поезд и нужно согласие соседней станции..."
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...или путевого поста, которые вымерли по мере внедрения АБ.
Перегоном при ПАБ считается также участок пути между блок-постами или блок-постом и станцией. По сути тот же блок-участок только с ручным управлением.
https://ru.wikipedia.org/wiki/%D0%9F...B2%D0%BA%D0%B0
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Может, просто дать ссылку на описание этих различий.
Цитата:
"North American signals are commonly of three types.
Absolute - Absolute signals are usually connected to an interlocking controlled by a block operator or train dispatcher. Their most restrictive aspect is "Stop" and trains cannot pass them at Stop unless they obtain special authority. Absolute signals will default to displaying Stop unless expressly cleared by a control authority. In older practice, multiple signal heads are directly above and below each other on the mast.
Automatic - Automatic signals are governed by logic connected through electrical track circuits which detect the presence of trains or obstructions automatically. Automatic signals are permissive with their most restrictive aspect being one of the "Restricted Proceed" variety. Trains can pass an automatic signal displaying "Restricted Proceed" without any outside permission. Automatic signals are typically recognized by having an attached number plate and in older practice, having multiple signal heads offset from each other on the mast (i. e., on opposite sides of the mast).
Semi-Automatic - Semi-Automatic signals are those that typically act as an automatic signal, but can be set to display an absolute "Stop" aspect. Semi-Automatic signals do not have a number plate, but can display an explicit "Restricted Proceed"-type signal."
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https://en.wikipedia.org/wiki/North_...ilroad_signals