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Wychwood93

Wychwood93

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25 Jan 2018
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693
Location
Burton. Dorset.
BRX said:
Something I notice on RTT, about its predictions for delayed trains (in practice this only really has relevance for freight).

Say the schedule has two timing points, A and B, and Z somewhere further down the line, and the timings look like this
A - 1200
B - 1205
...
Z - 1230

The train passes A at 1145, so appears to be running 15 minutes early, and an estimated passing time of 1150 is shown for B and 1215 is shown for Z.

But at 1200 it's still not passed B. You'd think the system would recognise that the earliest it could now possibly pass B is 1201 so it could predict this, and 1226 for Z. Or even assume in the absence of other information that it is just going to run in its pathed slot, and revert the predicted timings to the scheduled ones.

That's not what happens though - it'll carry on showing 1215 for Z even if it's still not shown up at B by 1205 and even if time ticks on past 1215 without it showing up at B!

What's the reasoning for this - is it that it might just not have registered at all timing points and therefore the fact that it's passed A is considered of greater predictive value than the fact that it hasn't registered at B?
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TRAKSY does much the same. No blame to either RTT or TRAKSY as they run off of a feed.
 
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takno

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Wychwood93 said:
TRAKSY does much the same. No blame to either RTT or TRAKSY as they run off of a feed.
Click to expand...
I'm thinking of getting rid of the predicted times on traksy. They don't serve a lot of purpose, since trains almost always catch up time or lose more of it, and you end up with situations like the one outlined.

RTT goes to a lot more trouble to gather additional timings from the signal-by-signal feed, but you still end up struggling to make usefu predictions about trains if they're running late and at a standstill
 
T

Tom

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35,000ft
The biggest issue RTT has on forecasting is that it is a largely reactive system. There is a small level of proactivity to it in some parts, but it largely reacts solely to the passage of trains past locations (and signals).

When a train doesn’t move, that means that the forecasting in general won’t work. To do better is underway but requires a lot of work around monitoring “alive” trains and determining whether they need further attention paying to it or not.
 
3

35B

Established Member
Joined
19 Dec 2011
Messages
5,369
Tom said:
The biggest issue RTT has on forecasting is that it is a largely reactive system. There is a small level of proactivity to it in some parts, but it largely reacts solely to the passage of trains past locations (and signals).

When a train doesn’t move, that means that the forecasting in general won’t work. To do better is underway but requires a lot of work around monitoring “alive” trains and determining whether they need further attention paying to it or not.
Click to expand...
You may want to look at last night's 1N32 and 1D30 for their delays at Hatfield for sample data (though I'm sure you have other examples!).
 
150249

150249

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13 Dec 2021
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The better Devon city
Not sure where to post this but what is going on here? Last time I checked there was only one 158833 :lol:
 

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50002Superb

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18 Aug 2021
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Nottingham
That’s great news Tom

== Doublepost prevention - post automatically merged: ==

Tom said:
c2c allocations are now available.
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Is there a reason you can’t search for the numbers though @Tom ?

I know 357001 was working today but when you search for it, it says no results found
 
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pokemonsuper9

pokemonsuper9

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50002Superb said:
I know 357001 was working today but when you search for it, it says no results found
Click to expand...
357001 (+019) seem to have been on:
5B63 0558 Shoeburyness C.S.D. to Shoeburyness
1F63 0611 Shoeburyness to London Fenchurch Street
1N12 0726 London Fenchurch Street to Laindon
2N07 0803 Laindon to London Fenchurch Street
2F30 0847 London Fenchurch Street to Shoeburyness
5S33 0958 Shoeburyness to Shoeburyness C.S.D.
5F15 1555 Shoeburyness C.S.D. to Shoeburyness
1F15 1612 Shoeburyness to London Fenchurch Street
2D56 1725 London Fenchurch Street to Grays
2D67 1817 Grays to London Fenchurch Street
2D68 1911 London Fenchurch Street to Shoeburyness
9L81 2058 Shoeburyness to London Liverpool Street
9L44 2231 London Liverpool Street to Shoeburyness
and allocation isn't there but platform lines up for the 5S45 0004 Shoeburyness to Shoeburyness C.S.D.
today.
 
G

GBM

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Location
West Cornwall
Was there any news about making RTT 'ad free' with a subscription, or was that too much of of an administration hassle?
 
liamf656

liamf656

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2 Aug 2020
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Derby
GBM said:
Was there any news about making RTT 'ad free' with a subscription, or was that too much of of an administration hassle?
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There were plans to, but I can’t remember if it’s still being pursued or not
 
K

kbizzle

Member
Joined
12 Jun 2022
Messages
171
Location
Wolverhampton, UK
GBM said:
Was there any news about making RTT 'ad free' with a subscription, or was that too much of of an administration hassle?
Click to expand...

I remember Tom did mention something a while back also regarding a lot of historical data (which I would be interested in having access to). Hopefully Tom can advise :)
 
A

ainsworth74

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Redcar
Tangentially related to RTT but I see Railmiles has gained a new field to record the type of journey. Leisure, business, crew or other. Nice idea but is there any chance of adding commuting as it feels different to business (at least to me) so would be nice to keep separate? ;)
 
djpontrack

djpontrack

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18 Jan 2011
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Morecambe
ainsworth74 said:
Tangentially related to RTT but I see Railmiles has gained a new field to record the type of journey. Leisure, business, crew or other. Nice idea but is there any chance of adding commuting as it feels different to business (at least to me) so would be nice to keep separate? ;)
Click to expand...
I can see where this new field is when entering a new journey but when viewing the same journey later I can’t see anything about it.
 
M

MrJeeves

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Burgess Hill
ainsworth74 said:
Tangentially related to RTT but I see Railmiles has gained a new field to record the type of journey. Leisure, business, crew or other. Nice idea but is there any chance of adding commuting as it feels different to business (at least to me) so would be nice to keep separate? ;)
Click to expand...
Has been implemented :)
 
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