AlastairFraser
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- 12 Aug 2018
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They would use the fast lines as described along the Edge Hill to Halebank section and so on.Are those "intercities" the trains on the NPR route? If so, surely they would use the fast lanes along the Halebank to Edge Hill section, allowing stopper services to use the slow lanes... and preferably a single-track between Halebank and Garston docks for freight traffic (my crayonista guesstimating seems to think one fits to the south of the current 4-track layout between those places)
Given the wibbly-wobbly nature of the line to the west of Warrington Bank Quay, would a straighter route not be more preferable to intercity traffic and this route used for stoppers? The CLC route is pretty straight, with exception given to the bizarre Warrington Central curve.
What would this route, if set as an intercity line, do when it reaches Broadheath (George Richards Way)? Viaduct over the whole street? Remove the street? Where would the route go after here to get to central Manchester?
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Additionally: the majority of services along the CLC Liv-Manc route are already expresses. Adding passing loops and extra platforms at choice stations to enforce priority to expresses and ensure stops without blocking the line for stoppers would be a massive improvement, especially if many stopping services between Liverpool and Warrington could be offset onto the FF line.
The CLC is unsuitable for NPR - the desired frequency would mean an end to stopping services, plus you'd require extra tunneling to get out of the Warrington urban area.
The NPR route would be in a tunnel after Latchford viaduct as it heads towards Manchester Airport to at least east of Lymm - the alternative is a tunnel from as far back as Halebank, you'd also lose the useful intermediate stop at Warrington Bank Quay for other regional and intercity connections.
Now, where the Merseyrail improvements come in is that, with an upgraded signalling system + full 4 tracking Edge Hill - Allerton for NPR and intercity services nearly all coming from Liverpool Central via Wapping Tunnel, you could run a more intensive service on the slow lines between Edge Hill and Allerton Jcn ,which means that you could use the CLC for more stoppers from both the Edge Hill and Garston route since the TPE/EMR would likely move over to NPR if possible.
The only thing you'd need to deliver those improvements separately from NPR then is extra stabling space/ more room to terminate at Warrington Central - this shouldn't be too much of an issue, permanently splitting the CLC service here shouldn't be a huge issue as long as the service frequency is high enough.
It would also unlock the potential to convert CLC stoppers east of Warrington into tram trains, which could easily join Metrolink at Cornbrook - taking pressure off Castlefield viaduct, making it easier to add more stations, and giving the eastern CLC stations a better penetration of Manchester city centre.