Moving The West London Line AC/DC Switchover To Shepherd’s Bush
London has a rail capacity problem, for both freight and passenger trains.
This report from Network Rail is entitled The London Rail Freight Strategy (LRFS).
One of the recommendations of the report is to move the switchover between AC and DC power on the West London Line to Shepherd’s Bush station. It says this about the switchover.
Extension of the overhead wires further along the WLL, to provide AC electrification as far south as Shepherd’s Bush station.
Two passenger train services run along the West London Line.
- Four tph – London Overground – Clapham Junction and Stratford
- One tph – Southern – Clapham Junction and Milton Keynes
Note.
- tph is trains per hour.
- London Overground would like to increase their service to six tph.
- All trains stop at Shepherd’s Bush station.
The West London Line (WLL) runs between Willesden Junction station in the North and Clapham Junction station in the South.
These are the stations and their electrification status.
- Willesden Junction – 25 KVAC Overhead Electrification
- Shepherd’s Bush – 750 VDC Third-Rail Electrification
- Kensington Olympia – 750 VDC Third-Rail Electrification
- West Brompton – 750 VDC Third-Rail Electrification
- Imperial Wharf – 750 VDC Third-Rail Electrification
The switchover is performed North of Shepherd’s Bush station with the train moving.
These pictures show the electrification to the North of Shepherd’s Bush station.
This double-electrification allows switchover, whilst the trains are moving.
This is said in the Network Rail document about moving the West London Line AC/DC switchover to Shepherd’s Bush station.
Extending the Overhead Line Equipment south to Shepherd’s Bush would enable passenger trains to change traction source whilst making their scheduled station stop.
A slight extension to dwell times at Shepherd’s Bush may be required, but the elimination of the need to slow down or, especially, to stop, as is the case for GTR trains, at North Pole Junction would release a significant amount of capacity.
Recent work carried out on behalf of Transport for London calculated that the relocation of the changeover to the Shepherd’s Bush could provide an indicative net saving of 7 minutes per hour, which is equivalent to an additional path and some additional time for timetable flexibility.
The LRFS capacity analysis concluded that this intervention could potentially release up to two additional timetable paths an hour in each direction.
Moreover, the analysis advised that eliminating the need for GTR services to stop to change traction at North Pole Junction would be of significant performance benefit even today.
This sounds to me like this us a good solution, that will give winners all round.
- I went North yesterday on a GTR (Southern) service and can confirm, the stop to switch voltage at North Pole junction.
- Extra paths are always good news.
- I have a feeling that the overhead electrification on the route isn’t the best, so Network Rail may even have to replace it anyway.
What I like about the proposal, is that if the switchover point is moved to Shepherd’s Bush station and in the very rare occurence of a switchover failure, the passengers can be easily evacuated from the train as it will most likely be in Shepherd’s Bush station, rather than in the industrial wastelands of West London.
These pictures show Shepherd’s Bush station.
Note.
- It looks like the bridges have been built high enough for overhead electrification.
- The platforms appear to be able to handle long trains.
- Putting up overhead gantries doesn’t look to be the most challenging of tasks.
I don’t think, that the engineering needed will be difficult and because of the gains outlined in the report, this project should be performed as soon as possible.
Should The AC/DC Switchover Be At Kensington Olympia Station?
The Network Rail document also muses about performing the AC/DC switchover at Kensington Olympia station.
This is said.
Although moving the changeover to Shepherd’s Bush would eliminate the need for passenger trains to slow down or stop at North Pole Junction, electrically hauled freight trains will still need to switch power supply modes whilst moving, wherever the AC/DC interface is located.
Due to the substantial incline facing trains running northward on the WLL, which increases in severity towards the Willesden end of the route, it would be preferable for the changeover to be made as far south as possible. This would enable freight trains to slow down to switch traction before reaching the worst of the gradient, giving them a much better chance of regaining line speed once drawing power from the OLE.
Although Kensington Olympia is less than a mile to the south of Shepherd’s Bush, the intervening route section is almost entirely level, with the incline commencing just before Shepherd’s Bush station and continuing to rise sharply along the rest of the WLL. The capacity and performance benefits of relocating the changeover are therefore likely to be greater if the overhead wires are extended to Kensington Olympia, removing the risk to traffic flow that would remain if freight trains were forced to switch whilst running uphill.
This would prepare the West London Line for the transition to electric freight that will be necessary as part of the decarbonisation of the railway over the next thirty years.
Resolving the current traction changeover issues for freight as well as passenger trains would support this transition by encouraging freight operators to invest in electric locomotives to run on the orbital routes, in the confidence that this constraint has been addressed.
Network Rail seem to have made a very strong case for switching between AC and DC power at Kensington Olympia station.
These Google Map shows Kensington Olympia station.
And these pictures show the station on a very wet day.
It doesn’t appear that there would be too many problems in electrifying Kensington Olympia station.
The only problem, may be the bridge at Addison Gardens to the North of Kensington Olympia station.
Although, Network Rail have an extensive range of tricks to get the wires through.
Conclusion
I believe, as probably do Network Rail, that Kensington Olympia station should be the station, where the switchover occurs.
But it’s all down to money.
It does seem to me, that the London Rail Freight Strategy is the first serious attempt to work out, the possible freight and passenger uses of the West London Line, which is one of those rail lines that has been designed by Topsy and accidents of history.
How many other rail routes in the UK, would be improved by a similar analysis?
Related Posts
These are related posts about the London Rail Freight Strategy (LRFS).
Decarbonisation Of London’s Freight Routes
East Coast Main Line South Bi-Directional Capability
Gauge Improvements Across London
Headway Reductions On The Gospel Oak To Barking, North London and West London Lines
Heavy Axle Weight Restrictions
Kensal Green Junction Improvement
Longhedge Junction Speed Increases
Moving The West London Line AC/DC Switchover To Kensington Olympia
Stratford Regulating Point Extension
Will Camden Road Station Get A Third Platform?
Will Clapham Junction Station Get A Platform 0?
A Very Long Freight Train At Camden Road Station
I took these pictures as a very long freight train passed through Camden Road station.
Note.
- I estimate the train had 45 positions for containers.
- Fourteen or fifteen were not filled.
- I suspect the train started in Wentloog in South Wales and was going to the Port of Felixstowe.
- That route is fully electrified from Wentloog to Ipswich.
- The journey took over eight hours.
This could be a route, where an innovative Class 93 locomotive could be able to handle the freight train all the way across England and half of Wales.
- Most of the way, the locomotive would be using the electrification.
- The short distance at Wentloog and the fifteen miles at Felixstowe would be handled by the onboard diesel engine and the substantial battery.
These will be world-class zero-carbon freight trains, just by changing the motive power.
Kensal Green Junction Improvement
London has a rail capacity problem, for both freight and passenger trains.
This report from Network Rail is entitled The London Rail Freight Strategy (LRFS).
One of the recommendations of the report is to improve Kensal Green junction. It says this about the improvements.
Upgrade of the junction, moving it slightly to the east and realigning the layout, to facilitate faster crossing speeds sufficient for a 3-minute planning margin.
This map from cartometro.com shows the track layout between Harlesden in the West to Kensal Rise station in the East.
Note.
- Harlesden, Willesden Junction Low Level and Kensal Green stations are on the shared tracks of the Bakerloo and Watford DC Lines.
- Willesden Junction High Level and Kensal Rise are stations on the North London Line.
- Kensal Green & Harlesden is a former station on the North London Line, which is shown on the map as dotted platforms.
- Kensal Green Junction is to the West of Willesden Junction High Level station.
- The City Lines, which are shown in black connect the North London Line to the West coast Main Line and the important freight yards at Wembley.
- The black tracks at the bottom of the map are the West Coast Main Line.
This Google Map shows Kensal Green Junction.
Note.
- The railway is the sandy scar across the top of the map.
- The Kensal Green Turnout is in the North-East section of the map.
- The Kensal Green Junction and the City Lines are in the North-West corner of the map.
- The road over the railway in the middle of the map is Wrottesley Road.
These pictures show the Kensal Green Turnout.
And these show Kensal Green Junction and the City Lines.
Note.
- The railway has generous margins.
- The City Lines are electrified.
- The North London Line is electrified.
- The Kensal Green junction appears to be fully electrified.
- All electrification is 25 KVAC overhead.
There would be plenty of space to install a modern efficient junction.
This is said in the Network Rail document about the improvement to Kensal Green Junction.
Kensal Green Junction, just to the northeast of Willesden Junction High Level station on the North London Line, is a key location for the functioning of the orbital routes.
It connects the North London Line to the West Coast Main Line and Wembley Yard, a vital link for cross-London intermodal flows.
Westbound freight trains must cross over the flat junction to access the City lines towards the West Coast Main Line, a conflicting move with any eastbound London Overground or freight services from Willesden Junction High Level. Ensuring these moves can take place as quickly and as smoothly as possible is essential to the efficient use of capacity on the North London Line.
The proposed enhancement would upgrade the junction, moving it slightly to the east and realigning the layout, to facilitate faster crossing speeds.
Currently trains from the City lines (in the eastbound direction) are limited to 10 mph over Kensal Green Junction, while trains towards the City lines (in the westbound direction) are limited to 15 mph.
This scheme would increase speeds through the junction so that trains can safely cross it a
minimum of 3 minutes after a conflicting movement – they currently have to wait at least 4 minutes.Although this is a relatively minor scheme, it could have a significant positive impact on both capacity and performance in the area.
I find the last paragraph very important. So does this improvement scheme offer good value to money?
Could The Junction Be Used By Passenger Trains?
Consider.
- Nothing is mentioned about passenger trains.
- Electric passenger trains are nippier because of better acceleration.
- No scheduled services appear to use the City Lines
- But I did find an empty stock movement from Wembley Sidings to Gospel Oak.
If the junction could be improved would there be any reason to run passenger trains through the junction?
Suppose, High Speed Two, during the rebuilding of Euston station, decided to stop the Watford DC Line services from using Euston station.
If the Class 710 trains of the London Overground could terminate at say Camden Road station, this would give passengers on the Northern part of the Watford DC Line another route to Central London by changing at West Hampstead station for Thameslink or the Jubilee Line or Camden Road station for the Northern Line by walking between the two Camden stations.
I would expect there may need to be some extra crossovers, so that trains from the Watford DC Lines could access the City Lines to get to and from Kensal Green junction.
In Will Camden Road Station Get a Third Platform?, I outlined how Camden Road station could get a third platform, as is also proposed in the LRFS.
But suppose though the existing Platform 2 at Camden Road station were to be diverted into two platforms.
- A Platform 2 East handling services to and from the East.
- A Platform 2 West handling services to and from the West.
That would do nicely.
Conclusion
Improving Kensal Green Junction may improve passenger services, especially if High Speed Two work at Euston means the Watford DC services have to be suspended.
Related Posts
These are related posts about the London Rail Freight Strategy (LRFS).
Decarbonisation Of London’s Freight Routes
East Coast Main Line South Bi-Directional Capability
Gauge Improvements Across London
Headway Reductions On The Gospel Oak To Barking, North London and West London Lines
Heavy Axle Weight Restrictions
Longhedge Junction Speed Increases
Moving The West London Line AC/DC Switchover To Kensington Olympia
Moving The West London Line AC/DC Switchover To Shepherd’s Bush
Stratford Regulating Point Extension
Cargo Sous Terrain
This is a Swiss idea to move small parcels around the country.
This is the project’s web site.
There will be a network of tunnels under Switzerland serving all the major centres.
This article on LeNews is entitled Switzerland’s Underground Tunnel Project Gets Green Light From Upper House, describes the project.
This is the first paragraph.
On 1 June 2021, a project to build an underground freight tunnel network stretching from Geneva to St Gallen, gained almost unanimous support in the Council of States, Switzerland upper house.
These are a few points from the article.
- It appears to be privately funded.
- There will be a three-lane tunnel network across the country.
- It will use driverless electric vehicles.
- Speed will be 30 kph.
- It will run twenty-four hours per day.
- There will be a track in the roof of the tunnel for smaller parcels.
- There will be a total of 500 km of tunnels.
- Completion date is set for 2045.
- It will cost around £24 billion.
It’s as though all of Switzerland were to be turned into a giant Amazon or Ocado warehouse.
Will It Work?
I don’t see why not, although it would be an immense project!
This paragraph indicates they will start small.
The first 70 km section of the tunnel network, which will connect a hub in Härkingen-Niederbipp with Zurich, is scheduled for completion in 2031.
But even that will cost around £2.5 billion!
It certainly, is a bold idea, that has possibilities.
One Freight Train Overtaking Another In Cardiff Central Station
I took these pictures as one freight train overtook another, as they passed to the West, through Cardiff Central station.
You don’t see it often in the UK.
Especially in a station.
My First Ride In A Class 769 Train
I went to Cardiff today and had my first ride in a Class 769 train. These pictures summarise my ride on the train between Cardiff Central and Bargoed stations.
So what was it like?
Noise And Vibration
Going up to Bargoed, I deliberately sat as near over the top of the engine as I could.
There was a bit of a whine, but not as much as in a new Class 195 train.
For those, who commuted on Class 319 trains for years on Thameslink, they probably wouldn’t notice much difference.
Performance
For a 100 mph electric train built for running between the flat lands of Bedfordshire and the South Coast over the hillocks of the Downs, the train climbed to Bengoed, which has an altitude of around a thousand feet with a purpose.
But then I have a Porterbrook brochure for these trains and the power source was sized, such that the train would be able to climb the stiffest routes in the UK.
The Interior
It looked to me like the Thameslink interior with new sea covers and plugs to charge a mobile phone.
They could certainly be upgraded a bit further to the standard of the Class 319 trains on the Abbey Line, that I wrote about in A Very Smart Class 319 Train.
A Job To Do
Trains for Wales has acquired these trains for extra capacity, whilst they refurbish their Class 150, 153 and 160 trains.
It looks to me, that they will do this job more than adequately.
Future Uses
I suspect Porterbrook hope that these trains will find uses around the UK, as they have spent a lot of time, effort and money to bring these trains into service.
But there are around eighty of the Class 319 trains in service or in store, from which the Class 769 trains are converted.
So they could find uses in several niche applications.
Short Term Fleets
This is effectively, the Trains for Wales application, where extra trains are provided, so that a fleet refurbishment can be performed.
- They would surely, have been a better replacement fleet for Greater Anglia, than the three Mark 2 coaches and a pair of diesel locomotives, that they used after a series of level crossing accidents.
- They could also be used to increase capacity for some major events like the Open Golf or a pop festival.
- Uniquely, they can stand in for both a 100 mph electric train or a 90 mph diesel train.
- They can even be fitted with third-rail shoes.
- They are the right size at four cars.
- They fit most UK platforms.
- They can be run in formations of up to twelve cars.
I wouldn’t be surprised to see Porterbrook or someone on their behalf, keep a fleet of trains on standby to handle short term needs.
Route Development And Testing
There has been a lot of pressure to open up new routes in recent years and these trains would be ideal to try out routes and test new electrification.
Tri-Mode Services
Great Western Railway have a particular problem with their service between Reading and Gatwick, in that it has some third-rail electrification. As they might like to extend this service to Oxford, an ideal train would be dual-voltage and self-powered.
This extract is from the Great Western Railway section in the Wikipedia entry for the Class 769 train.
Although initially planned for use in London and the Thames Valley whilst twelve Class 387 units are modified for Heathrow Express services, the future plan for these units will be operating on services between Oxford, Reading and Gatwick Airport, which would mean operating on unelectrified, 25 kV AC OHLE and 750 V DC third-rail routes. To enable this, Great Western Railway’s allocation of Class 769 units will retain their dual-voltage capability in addition to being fitted with diesel power units. The units will also receive an internal refurbishment and be fitted with air cooling.
I suspect, that they’ll also be used on the Henley, Marlow and Windsor branches, which have some operational problems.
- The branches are not electrified.
- Some branches run occasional services to Paddington.
- The Windsor branch probably needs more capacity.
The Marlow branch could be difficult, but I suspect that, there’s a solution somewhere.
Luxury Bi-Modes
Greater Anglia felt they needed luxury bi-modes for East Anglia and they bought Class 755 trains, which are probably a lot more expensive, as they are brand-new and from Stadler of Switzerland.
Surprisingly, the Class 319 trains have a higher passenger capacity.
But both trains could do a similar task, where the route is partially electrified.
As I said earlier about the GWR units.
The units will also receive an internal refurbishment and be fitted with air cooling.
Porterbrook’s brochure for the Class 769 train talks about using them between Manchester and Buxton.
Surely, this route could do with a Northern version of a GWR interior.
I also think a service should link Hellifield and Buxton. as I wrote about in Why Not Buxton To Hellifield?
That would show what Class 769 trains could do!
It would also connect the Peak District to the hills North of Lancashire.
I might also be, that the standby-fleet should also be the luxury variant of the train. Surely, supporters going to the Open at some of the inaccessible venues could afford pay to pay extra for a comfy train.
Express Freight And Parcels Services
Rail Operations Group would appear to have placed the second-largest order for Class 769 trains, which they will use to launch a high-speed parcels service called Orion.
This extract is from the Rail Operations Group section in the Wikipedia entry for the Class 769 train.
Orion is aiming to launch its first trial service conveying parcels and light freight in April 2021, with the Midlands to Mossend now likely to be the debut flow. The company is to use converted Class 319s for the service and is now planning for a fleet of 19 four-car units – nine Class 319s and 10 Class 769s. Arlington Fleet Services at Eastleigh is modifying the interiors of the units to accommodate roller cages for parcels, with the aim of operating primarily under electric power but with the 769s using their diesel engines to act as tractor units for the 319s on non-electrified stretches. The first 769 bi-mode, No 769501, has undergone its Flex conversion at Brush in Loughborough and is due to be outshopped from Arlington at Eastleigh in March following its interior modification.
In Did These Strawberries Have Road- Or Rail-Miles?, I talked about strawberries going between Scotland and London.
Surely, the movement of high-quality food could be one of the cargoes for Orion.
It wouldn’t be the first such traffic, as Class 43 power cars of the InterCity 125s used to carry flowers and fish up to London from Cornwall.
There’s a lot of space in the back of a Class 43 power car.
I certainly feel there are possibilities for using Class 769 trains as high speed parcels transport.
It should be noted that Class 325 trains already run high speed parcel services up and down the country on behalf of Royal Mail. These trains may look like later British Rail trains, but they are in fact based on Class 319 trains.
So I doubt, there’ll be any worries that the trains can’t handle the required services after conversion.
Conclusion
It looks to me that Porterbrooks plan to convert numbers of their Class 319 trains into Class 769 trains will find several ready markets.
It could be argued that more carbon savings could be achieved by perhaps a new battery-electric or hydrogen-electric train. But these will take years to develop!
These trains are a good short-term solution, that will help define their zero-carbon successors.
Did These Strawberries Have Road- Or Rail-Miles?
These strawberries were grown my M Porter in Perthshire and I bought them in the M & S Simply Food store in Waterloo station.
So did they travel between Perthshire and London, by truck or train?
I think the strawberries came from East Seaton Farm, owned by Lochart and Debbie Porter.
If the strawberries were to be grown any further East, they’d be grown in the middle of the North Sea.
But did they come South, by road or rail?
I suspect it was the former, but there is change in the air! Or do I mean on the rails?
In My First Ride In A Class 769 Train, I talked about Rail Operations Group and their proposed Orion parcels service, that will use Class 769 trains.
This service would surely be ideal to bring strawberries and Arbroath smokies to the South.
Nestlé’s Glass Train Shifts More Cargo From Road To Rail
The title of this post, is the same as that of this article on RailFreight.com.
This is the first paragraph.
In France, Nestlé Water is bringing more trains to the rails for the transport of reusable water bottles to and from the production site. The Glass Train project, as it is called, is also getting two more destinations; Arles in Southern France and Merrey in the country’s East. The 25 new trains will help the company remove up to 1,000 trucks off the road and save approximately 500 tons in CO2 emissions.
Nestlé is expanding the project to Vittel and Pellegrino.
Conclusion
We need more projects like this!


























































































































































