Is there certain amount of hours driver can be on duty ?
I can only assume that this "one pan only" thing only applies at speeds over 100mph otherwise EMU's wouldn't be able to run in multiple at up to this speed with more than one pan raised, and these trains certainly don't have the facilty for a 25kV bus.
I believe that the 140mph capability on the ECML was only ever tested but never used in service. While an IC225 set is cleared to operate at these speeds, the signal block lengths along the East Coast route are sufficient only for a maximum linespeed of 125mph, and even then it's not possible to go that fast along the entire route. To run any faster would require either an increase in the signal block lengths (reducing line capacity) or a fifth signal aspect of some sort to give the extra space between flat chat and a red.
Can't check your maths about the speed at which a person would be at risk of being dragged under a train, but I would guess that it would depend on a number of other variables. For example, Cl317 doing the ton would likely produce more turbulence than an HST at the same speed because it has a vertical front rather than a more aerodynamic wedge.
O L Leigh
Is there certain amount of hours driver can be on duty ?
1.Do any of you find driving at night a little less easier than in the day because of well you cannot see much infront of you so may be a little scary or even just harder to spot certain things like speed limit signs?????
2.This is a slightly silly question but how many birds do you hit on an average year??????
3.If you have ever hit a bird what is your reaction??????
4.What is the best thing you have had pass you (just out of curiousity)?????
The one pantograph thing is nothing more than power usage. On the ECML extra neutral sections were added to break up the feeder stations supply into smaller sections, because if you have over a certain amount of electric trains in one feeder stations area, then power problems can arise. We (FCC) run a twelve coach 365 service with all 3 pans raised every weekday (1807 ex Kings Cross) and GNER used to use the spare Eurostar sets they leased a few years back with both pans up at 125mph. Its power usage, nothing more.
In my own opinion, they really ought to investigate upping the speed limits on the WCML as soon as possible. After all, the line itself is relatively straight (Aside from a few trouble-spots like York) and long enough to allow half-decent, high-speed operation IMO. 8)There are no 140mph sections on the ECML at all...it was indeed just for testing that the 91's were allowed to do it.
The one pantograph thing is nothing more than power usage.On the ECML extra neutral sections were added to break up the feeder stations supply into smaller sections,because if you have over a certain amount of electric trains in one feeder stations area,then power problems can arise.We (FCC) run a twelve coach 365 service with all 3 pans raised every weekday.(1807 ex Kings Cross) and GNER used to use the spare Eurostar sets they leased a few years back with both pans up at 125mph.Its power usage,nothing more.
My limited information about multiple pantograph usage comes from a statement in O.S. Nock's Two Miles a Minute; Hinted at the start of Chapter 10 on page 95 and explained in detail elsewhere in the book.No, I think it is more than that. I've definately read somewhere that a high speed service could not operate with more than one pan raised because the disturbance caused to the OLE by the passage of the leading pan would not have had chance to dissipate before the second pan came along, meaning there was an unacceptably high risk of damage to the OLE and/or pan, and even of a dewirement. Then again, I think the powers-that-be might have been playing things a bit safe because I don't think they'd actually carried out much real research into the matter.

)Hail All!In my own opinion, they really ought to investigate upping the speed limits on the WCML as soon as possible. After all, the line itself is relatively straight (Aside from a few trouble-spots like York) and long enough to allow half-decent, high-speed operation IMO. 8)
I'm of the general mindset that I could safely get an APT up the WCML at a roundabout maximum speed of 195mph or so. Transferring the same safety limits onto the ECML, I'd say that my roundabout maximum speed there in the same type of train would easily be close to 300-350mph!![]()
I vaguely remember reading something that said it was because the ECML has some fairly steep changes in the heigh of the OLE, particularly around level crossings. IIRC the Eurostars were limited to 110mph when running up to York/Leeds?No, I think it is more than that. I've definately read somewhere that a high speed service could not operate with more than one pan raised because the disturbance caused to the OLE by the passage of the leading pan would not have had chance to dissipate before the second pan came along, meaning there was an unacceptably high risk of damage to the OLE and/or pan, and even of a dewirement. Then again, I think the powers-that-be might have been playing things a bit safe because I don't think they'd actually carried out much real research into the matter.
True, true...But give me a 370 at Euston and a cleared line all the way to Manchester Piccadilly (Or further!Whilst respecting your opinion, you're living in cloud-cuckoo land with those speeds.
I've always thought - Given that existing signalling is arranged in "blocks" designed for traditional loco-hauled trains doing 100mph - That linking successive blocks together in the signalling system would allow higher speeds to be attained, as the block length would effectively double every time it was done. 8)The only way you're going to get anywhere near to achieving them is to have a seperate line built to TGV-standards with in-cab "moving block" signalling.
Linking consecutive sections of signals together and having them displaying the most negative (Closest to danger) aspect for that relevant section could easily allow much higher speeds to be attained safely on existing infrastructure! With todays technology, possibly not...But who knows what the future holds for XHSR?...The French may well have got a TGV to exceed 300mph a little while back, but they only managed that because the train had been specially prepared and had all the trailers removed from the formation, and was running on a closed section of line well away from any other train in case it all went horribly wrong. You'd never be able to replicate this in service.
AFAIK stands for As Far As I know, and is a widely recognised Internet acronym intended to save our poor old fingers!AFAIK? What does this mean? I could only figure out:
As Far As I Know
And For All I Know
A Further Answer Is (K?)

Okay I have a few questions aswelll which I have always been wondering about.
1.Do any of you find driving at night a little less easier than in the day because of well you cannot see much infront of you so may be a little scary or even just harder to spot certain things like speed limit signs?????
2.This is a slightly silly question but how many birds do you hit on an average year??????
3.If you have ever hit a bird what is your reaction??????
4.What is the best thing you have had pass you (just out of curiousity)?????
Cheers
Damn that Stella3.If you have ever hit a bird what is your reaction?
The Eurostars were always a bit odd because the safety rules for the Chunnel did not permit any bus cables. Therefore, each half-set has to operate independently of the other. In effect, they are two EMU's operating in multiple rather than a single train.O L Leigh
95mph in a Network Rail transit? Surely that's classed as misuse of company equipmentDamn that Stella
I've hit a bird in a transit van doing9569.5mph, it was great 8)
I've always thought - Given that existing signalling is arranged in "blocks" designed for traditional loco-hauled trains doing 100mph - That linking successive blocks together in the signalling system would allow higher speeds to be attained, as the block length would effectively double every time it was done. 8)
95mph in a Network Rail transit? Surely that's classed as misuse of company equipment![]()
As an example of what I'm trying to say:
Take a hypothetical stretch of line, 100 miles long, arranged in 10 mile blocks, and controlled by signals HYS 1 to 10. Normally, a train would be instructed by each individual signal in sequence...So the driver of that train would respond to HYS 1, HYS 2, HYS 3 and so on.
Linking sets of signals would allow for double or greater length blocks, so doubling up the blocks in this case would mean that each paired set of signals would display the closest aspect to danger that exists throughout that paired-up stretch of line and would allow a theoretical maximum of 150mph. Therefore the driver of the train would be instructed by HYS 1 (Echoing HYS 2), HYS 3 (Echoing HYS 4) HYS 5 (Echoing HYS 6) and so on.
Assuming that twenty consecutive blocks exist on a normal stretch of high-speed line and are spaced for a nominal 100mph as per BR standards, linking them up in various formations would give the following theoretical speed limits:Thus...In a purely theoretical sense (Bearing in mind that my knowlege of signalling requirements and spacing is base at best!
- 1 signal per block = 20 blocks = 100mph,
- 2 signals per block = 10 blocks = 150mph,
- 4 signals per block = 5 blocks = 200mph,
- 8 signals per block = 2.5 blocks = 300mph,
- 16 signals per block = 1.25 blocks = 400mph
hock
Linking consecutive sections of signals together and having them displaying the most negative (Closest to danger) aspect for that relevant section could easily allow much higher speeds to be attained safely on existing infrastructure!
With todays technology, possibly not...But who knows what the future holds for XHSR?...
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This is common technology now. Eurostars also have every cable duplicated to reduce the chance of a train circuit failure
This is common technology now. Eurostars also have every cable duplicated to reduce the chance of a train circuit failure
How did you just become a driver then? As don't most driving jobs require previous training anyway?