Research short
A new calculation tool to aid train regulation decisions could reduce delays and keep costs down.
Jasmin CollierEditorial Content Manager, RSSB
Several train regulation policies are in use on our network today. These are designed to aid signallers in their regulation decisions. For example, if two trains arrive at a junction at the same time, a signaller will use their panel’s policy to decide which to run and which to hold. The intention is always to keep trains running as closely to time as possible and not contribute to delays.
Some of these train regulation policies are based on the Public Performance Measure (PPM), which considers a train’s punctuality at a destination. Others are based on Right Time, which measures punctuality at every station along the way. Right Time is now the industry standard, meaning that PPM policies are becoming outdated and may cost the industry.
For this reason, RSSB explored a variety of train regulation policies to see which might be the most financially valuable to operators and other key industry players. Looking at both GB and international best practice, the research analysed three policy types that could be applied depending on the type of service and the particular junction.
‘Right-time, right-path’ and ‘first come, first served’ approaches were often the most useful for keeping trains running on time. The research team produced a Good Practice Guide that summarises why these approaches are likely to be most beneficial moving forward.
They also created a handy calculation tool. The tool helps users understand which train should move first and when that might change depending on delays. Based on this work, there is the potential for optimised, justifiable policies that signallers can work to in order to reduce delays and keep related costs down.
The Network Rail North West and Central (NW&C) region has been using the tool to explore the fitness of its current policies in practice. NW&C has also been using the tool to guide conversations with operators to discuss the implementation of optimised policies across the whole route.
The impact calculation tool has been particularly useful in showing the difference in regulating one service in front of another. It has enabled us to have some really good and informed conversations with our operators on the junctions that we’ve looked at so far. Promising results so far, and we continue to use the tool in other locations.
This research project could offer some real financial benefit. Keeping as many services as possible running to time cuts delays, keeps associated costs down, and creates opportunities to reinvest those funds in other important areas.
To read ‘Understanding what makes a good train regulation decision with CP6 metrics (T1178)’ in full, head to our Research Catalogue.
View page
Group or committee of the month
RSSB board member interview