Speed restrictions

[Deleted]

Hi, I notice that some PSR signs just say T. On NR this would be termination of a temporary speed restriction. On LUL is this a similar situation to highways where if a road is de-restricted there is still a limit even though it is not explicitly signed? I would think each line would have a specific line speed in that case that would apply for any locations not covered by PSRs although of course TSRs would still apply any areas with no explicit restriction.

[North End]

Jun 1, 2010 5:28:42 GMT @zoe said:

Hi, I notice that some PSR signs just say T. On NR this would be termination of a temporary speed restriction. On LUL is this a similar situation to highways where if a road is de-restricted there is still a limit even though it is not explicitly signed? I would think each line would have a specific line speed in that case that would apply for any locations not covered by PSRs although of course TSRs would still apply any areas with no explicit restriction.

Yes every section of line has a line speed listed in the Line Supplement.

Whilst T boards are used on almost all the system, I believe the current standard is to display the "new" speed limit. Therefore on the Northern Line Bank branch you will find "35" signs instead of T boards.

Some line speeds are surprisingly low, for example the Bakerloo Line is no more than 30mph south of Paddington, likewise the Northern Line Charing Cross branch is largely 30mph.

[v52gc]

All 45mph on the pic other than PSRs and TSRs

[Deleted]

It's 60 On the Met... So which applies between Rayners and Uxbridge?

[Colin]

Jun 3, 2010 23:27:20 GMT @jn114 said:

It's 60 On the Met... So which applies between Rayners and Uxbridge?

It should be signed locally - that's a PSR (Permanent Speed Restriction). The PSR's applied throughout a given section (ie, anything lower than the general maximum permitted line speed) will be shown in the respective line supplements (internal LU document), in this case that area will be shown in both the Piccadilly and Metropolitan line supplements.

The version of the Met line supplement I have in my possession shows that generally the PSR on the Rayners Lane to Uxbridge section is 50mph.

As for the District line, if anyone cares to know, the maximum permitted line speed is 45mph. Generally speaking, the section between West Ham and East Putney/Turnham Green/Edgware Road is 35mph though there many sections within that area where the PSR's are even lower than that....

[Phil]

Jun 4, 2010 0:55:35 GMT Colin said:

As for the District line, if anyone cares to know, the maximum permitted line speed is 45mph. .

c2c must really have been rubbing their hands with glee when the Districts were stopped from doing up to 60 in the Barking to Upminster section. I wonder just how many people found it was now worth changing to c2c and depriving LU of their custom.

[Colin]

You must be talking a lot of years ago if the speed limit on that section used to be 60mph - well before my 10 years on the job and probably well before D stock. I wonder how relevant the speed limit is though, given that District line trains serve 7 stations between Upminster & Barking whereas c2c serve none and run direct - c2c will always be faster regardless of actual speed!

In any case though, TfL fares apply between Upminster & Fenchurch Street; so revenue allocation is fixed no matter which train customers ultimately use.

[Deleted]

If I remember correctly the 60 mph on the Met was explicitly signed rather than a T board.

[Phil]

Jun 4, 2010 8:18:14 GMT Colin said:

given that District line trains serve 7 stations between Upminster & Barking whereas c2c serve none and run direct - c2c will always be faster regardless of actual speed!

Yes: my point was that if the District took, say, 7 mins longer to/from the city nobody would bother changing - but if it took 15 mins longer quite a few punters might think it worth the effort to change (at Barking, say) and save the time.

[DWS]

Jun 8, 2010 13:22:03 GMT Phil said:

Jun 4, 2010 8:18:14 GMT Colin said:

given that District line trains serve 7 stations between Upminster & Barking whereas c2c serve none and run direct - c2c will always be faster regardless of actual speed!

Yes: my point was that if the District took, say, 7 mins longer to/from the city nobody would bother changing - but if it took 15 mins longer quite a few punters might think it worth the effort to change (at Barking, say) and save the time.

Lots of customers change from C2C to District Line at Barking or Upminster .