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Great Western Coffee Shop > Journey by Journey > London to Swindon and Bristol > Wierd noises between Parkway and Swindon
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Author Topic: Wierd noises between Parkway and Swindon  (Read 6542 times)
JayMac
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« on: October 08, 2009, 19:47:59 »
Can anybody tell me what the lineside klaxons are all about on the run from BPW» (Bristol Parkway - next trains) to Swindon?

Heard them in the cutting after Chipping Sodbury tunnel and then again on the approach to the junction with the GWML▸ (Great Western Main Line) before the approach to Swindon.
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« Reply #1 on: October 08, 2009, 19:53:12 »
automatic warning system for trackside workers. 
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JayMac
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« Reply #2 on: October 08, 2009, 22:51:17 »
K. Thanks for that Super TM▸ (Train Manager, or possibly Ticket Machine, depending on context). Not come across these before. Are they used to avoid temporary speed restrictions when PW▸ (Permanent Way - the railway track) gangs are at work? I didn't notice any slowing of the train.
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« Reply #3 on: October 09, 2009, 07:14:35 »
In some places they are permanent fixtures i.e where the line has reverse curves and the like which give inadequate sighting for lookouts.  There are also portable versions which can be set up to protect worksites.  Nothing to do with temporary speed restrictions at all.
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« Reply #4 on: October 09, 2009, 20:14:29 »
 correct name ...TOWS train operated warning system, worked  automatically by The track circuit system when a train has been detected
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« Reply #5 on: October 10, 2009, 07:29:12 »
Quote from: dog box on October 09, 2009, 20:14:29
correct name ...TOWS train operated warning system, worked  automatically by The track circuit system when a train has been detected
Thats one system there is also LOWS Local Operated Warning System, Pee Wee which is a tempoary warning system to aid Look Outs and a number of other systems
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« Reply #6 on: October 11, 2009, 11:18:41 »
Quote from: Electric train on October 10, 2009, 07:29:12
Quote from: dog box on October 09, 2009, 20:14:29
correct name ...TOWS train operated warning system, worked  automatically by The track circuit system when a train has been detected
Thats one system there is also LOWS Local Operated Warning System, Pee Wee which is a tempoary warning system to aid Look Outs and a number of other systems

Lookout Operated Warning System  Wink
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Chris from Nailsea
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« Reply #7 on: October 11, 2009, 18:08:51 »
Dare I ask what the 'Pee Wee' warning system for lookouts is all about?  Roll Eyes Shocked Grin
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« Reply #8 on: October 11, 2009, 19:02:31 »
Quote from: chris from nailsea on October 11, 2009, 18:08:51
Dare I ask what the 'Pee Wee' warning system for lookouts is all about?  Roll Eyes Shocked Grin
Its quite an old system now.  It consists of at the site look out location a box with a klaxon and a telephone hand set, a cable is run out to the advance lookout who holds a telephone hand set.  Both the site and advance look outs have to hold the telephone hand set as they have a trigger on them which if let go sets the klaxon off the same happens if the cable gets cut.

Typically Pee Wee is used where intermediate look outs is impractical it can also be used at night in certain circumstances.   The disadvantage of Pee Wee is the running out of the cable, some locations had Pee Wee cables laid in the line side troughs but as its not armoured suffers damage
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