Class 175 mysterious disappearance

[Entertexthere]

Hi. I was checking realtimetrains for shewsbury and I couldn't see any working scheduled for the line. Usually coradias are commonly found on the Manchester service so I'm questioning whether the fleets been taken out for refurbishment or a problem required the entire fleet to be pulled or even if they've been relocated to a line deeper into wales

 

[randyrippley]

any local engineering works blocking the line?

 

[Kite159]

Are you confusing what RTT is saying?

Timed for 100mph max
Pathed as Class 158 (Express Sprinter) DMU

As RTT doesn't recognise the 175s for that bit (same with some other modern DMUs)

 

[_toommm_]

Further to what Kite said, the 'pathed as a 158' is whats called a timing load - TOCs will often use the slowest train that could be allocated onto that route, in the event of that train running the service so that it doesn't lose time. But in some cases, like CrossCountry, there's no specific timing load for their 170s, so they use 158s as it would be comparable.

The only TOC IMO where timing loads are fairly accurate at the moment is LNER, although this can obviously be affected by engineering works and last minute alterations.

 

[Lanley]

Further to what Kite said, the 'pathed as a 158' is whats called a timing load - TOCs will often use the slowest train that could be allocated onto that route, in the event of that train running the service so that it doesn't lose time. But in some cases, like CrossCountry, there's no specific timing load for their 170s, so they use 158s as it would be comparable.

The only TOC IMO where timing loads are fairly accurate at the moment is LNER, although this can obviously be affected by engineering works and last minute alterations.

Virgin Trains West Coast are also pretty good for this

 

[Bletchleyite]

Virgin Trains West Coast are also pretty good for this

The reason being the different performance of Voyagers and Pendolinos as well as the need for Voyagers for diesel routes. So them being swapped is unusual (but not unknown).

 

[PHILIPE]

In a nutshell, RTT doesn't show what is diagrammed to work a train

 

[Entertexthere]

Oh okay thanks

 

[43074]

Further to what Kite said, the 'pathed as a 158' is whats called a timing load - TOCs will often use the slowest train that could be allocated onto that route, in the event of that train running the service so that it doesn't lose time. But in some cases, like CrossCountry, there's no specific timing load for their 170s, so they use 158s as it would be comparable.

The only TOC IMO where timing loads are fairly accurate at the moment is LNER, although this can obviously be affected by engineering works and last minute alterations.

Class 170 timing loads do exist but the fact they don't show on RTT is because of how it translates the schedule data, so taking Southern as an example trains operated by 171s are timed using a Class 170 timing load, but show as Class 158s on RTT. You get similar discrepancies with cancellation information - e.g. cancellation code "TI" is a rostering error but RTT displays it as a train planning error, again it's all to do with the way that it interprets the data feeds which supply the information.