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Author Topic: Co-incidence of rolling stock and timetable numbers.  (Read 1532 times)
grahame
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« on: August 30, 2018, 11:06:49 »

From https://en.wikipedia.org/wiki/British_Rail_Class_115

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Coincidentally, Class 115 units operated services under Table 115 in the British Rail timetable.

Are there, or were there any other unit / locomotive class types operating on tables of the same number?   Westerns on Bedford to Brighton anyone?
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JayMac
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« Reply #1 on: August 30, 2018, 11:13:33 »

Not a rolling stock class type per se, but services on Table 125 (London - Swindon, Cheltenham Spa, Bristol, Weston-super-Mare and South Wales) were, until the arrival of Class 80x, mostly operated by HSTs (High Speed Train), aka InterCity 125s.
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« Reply #2 on: August 30, 2018, 12:53:23 »

Class 117s were used on Table 117 routes (Paddington to Reading), and Class 121 'Bubble Cars' would no doubt have worked trains on Table 121 (Slough to Windsor).
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« Reply #3 on: August 30, 2018, 12:55:17 »

165s doing Portsmouth to Southampton (Cardiff)
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paul7575
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« Reply #4 on: August 30, 2018, 14:22:15 »

Interesting question.

SWR» (South Western Railway - about) Salisbury- Romsey are shown as part of the Waterloo to Bournemouth service, which is table 158...

Paul
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grahame
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« Reply #5 on: September 01, 2018, 22:12:39 »

Looking back to an old timetable ... I was amused at the idea of a deltic hauling a train from Kettering to Corby, a compton on the front of a Sheffield to York local, or a class 37 at Ilkley.  I can imaging a Brush 47 between Newcastle and Berwick upon Tweed, and a tadpole on London to Hastings via Tunbridge Wells was a near miss (wouldn't have been such a near miss with the wide carriage against the sides of the tunnel!)
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rower40
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« Reply #6 on: September 03, 2018, 13:56:33 »

That's NOTHING...

I have a much more nerdy co-incidence in railway-related matters.

Train descriptions, of the form "number letter number number" can be valid hexadecimal (base 16), if the letter is A-F.
In the ARS (Automatic Route Setting) system memory, times are stored in "number of 5-second units since midnight", as this can be stored in a 16-bit "word", which is also represented in hex as 4 characters.

If ARS is waiting for a train's departure time, then that gets output, in hex, on the ARS system log.
I'm still waiting to find a train waiting for "itself".  1A04 leaving somewhere at 0915 would fulfill the criteria - because 1A04 (hex) is 6660 (decimal), or 33300 seconds since midnight.

Not all hex numbers become valid departure times, since only on-the-minute or on-the-half-minute are allowed departure times.  Conversely, not all valid departure times can be train descriptions, because the 1st, 3rd and 4th characters must be numeric, not A-F.

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SandTEngineer
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« Reply #7 on: September 03, 2018, 22:51:09 »

Think I need to digest that one, ROWER40, over a gin and tonic or two..... Smiley
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