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  2. Railway semaphore signal - Wikipedia

    en.wikipedia.org/wiki/Railway_semaphore_signal

    British semaphore stop signal (lower quadrant type) A stop signal is any signal whose most restrictive indication is 'danger' (which compels a stop). Stop signals are used to protect junctions, points (North America - 'switches'), level crossings, movable bridges, platforms or block sections. A particular signal box may control one or more stop ...

  3. North American railroad signals - Wikipedia

    en.wikipedia.org/.../North_American_railroad_signals

    The Hall disc signal (also called a "banjo" signal) was the first electrically operated signal to be widely adopted by American railroads. Thomas Hall patented his disc signal design in 1867. [2]: 146–147 A banjo-shaped wooden case housed a large iron wire hoop with red silk stretched and glued over it.

  4. Railway signalling - Wikipedia

    en.wikipedia.org/wiki/Railway_signalling

    British lower-quadrant semaphore stop signal (absolute) with subsidiary arm (permissive) below A block signal and a 130 km/h speed limit at kilometer post 547 in Iisalmi, Finland Trains cannot collide with each other if they are not permitted to occupy the same section of track at the same time, so railway lines are divided into sections known ...

  5. 6 Heart-Healthy Foods You Should be Eating in January ... - AOL

    www.aol.com/lifestyle/6-heart-healthy-foods...

    “Omega-3 fatty acids reduce inflammation, lower blood pressure and decrease triglycerides, key ingredients for optimum cardiovascular health,” says Patricia Bannan, M.S., RDN, author of From ...

  6. How the Fed and Trump could collide in 2025 [Video]

    www.aol.com/finance/fed-trump-could-collide-2025...

    If Trump’s proposed policies, from tariffs to tax cuts, cause more inflation, that could force the Fed to pull back even more on any easing — or even consider rate hikes. That likely wouldn ...

  7. Union Switch & Signal - Wikipedia

    en.wikipedia.org/wiki/Union_Switch_&_Signal

    Union Switch & Signal (commonly referred to as US&S) was an American company based in Pittsburgh, Pennsylvania, which focused on railway signaling equipment, systems and services. The company was acquired by Ansaldo STS (from 2015, Hitachi Rail STS ) in 1988, [ 1 ] operating as a wholly-owned company until January 2009, when US&S was renamed ...

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