Robsignals
Member
- Joined
- 3 Aug 2012
- Messages
- 424
The 4 tracking ends just south of Three Bridges so the 24 hour service only runs that far. However, there are overnight coaches from Brighton to Gatwick and Heathrow,..]
To be precise 4 track ends at Balcombe [Tunnel] Jct, from there to Preston Park both lines (Slow Lines Copyhold Jct - Haywards Heath) are Bi-Directional, one justification being the then 2 hourly night service. Brighton trains dep Vic at 0100 & 0400 and surprisingly call at HH as the stop was deleted to save buses/taxis during diversions by the Mid-Sussex Line.
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0105 Bournemouth - may have something to do with staff travel needs?
Think it ran for many years as a Staff Train before being made a service train.
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If anything I'd prefer the Brighton lines altered to paired by direction for the benefits it offers turnbacks and overtaking. Not really viable though due to the situation with the quarry lines though.
Good for overtaking and maximising line capacity. Not good for turnbacks and junctions which both require flyovers (at Welwyn GC the flyover was built in the 80's for turning-back the Inner Suburban service) also on the approach to the London terminal. While building all these flyovers might as well have 2 more at each end of the Quarry Line.
No existing flying jct is built to optimum design with the diverging track rising from between the Fast and Slow Lines, would require the line on the diverging side to also go up on viaduct.
On the SWML Woking's flat junction, once claimed to be the busiest 4 track one in Europe, is a major problem as is the one at Basingstoke. Why weren't flyovers built at these key locations.