Greybeard33
Established Member
Today the delay to the 0600 from Scarborough seems to have been incurred mainly at Castlefield Junction. It waited 7 minutes there for the Northern 0713 Liverpool South Parkway to Oxford Road, which was 16L at the junction. In turn that had been held up behind the Northern 0723 Warrington Central to Oxford Road, which departed Warrington 11L and was 16L at the junction. This delayed departure was caused by it waiting for the EMT 0658 South Parkway to Norwich, which departed South Parkway 13L and was 16L at Warrington. The EMT ECS move which provided the stock for this service left Nottingham on time at 0343, but was 19L at Hazel Grove and arrived at South Parkway at 0707, 12L.Today the 0600 to Manchester Airport yet again terminated at Picadilly even though it was only 10 late.
Had the TPE 0600 from Scarborough continued to the Airport 10L, that would have ensured a late departure of the 0847 Airport to Middlesbrough, since the scheduled turnround time is only 11 minutes. No doubt the late running of the Middlesbrough service would then have caused knock-on delays to other TPE services throughout the day. As it was, the Middlesbrough service started short at Piccadilly, already 2L, and was 5L at Victoria, but was able to recover this after Leeds.
When the Scarborough service was terminated short, the long dwell in Piccadilly P13 caused a 9 minute delay to the following 0422 Glasgow to Airport, which had been on time at Ordsall Lane. Passengers for the Airport who changed to this train from the Scarborough service at Piccadilly (same platform) will then have arrived at the Airport at 0853, 19 minutes after their scheduled arrival time, but hopefully not too late to catch their flights. The 0910 Airport to Glasgow still departed on time, since this diagram has a (relatively generous) 23 minute turnround time scheduled at the Airport.
The interactions and lack of resilience in this timetable seem to provide a demonstration of the "butterfly effect" of chaos theory, whereby supposedly the flutter of a butterfly's wings can ultimately result in a tornado on the other side of the world.