One of the fundamental building blocks of the freight timetable is the time allocated for each train to run between two points.
Known as sectional running time (SRT), this is a finely balanced calculation and is key to running an efficient railway.
But if an SRT is underestimated (not enough time), the train may take longer than planned, causing delays to other services and limiting the number of freight trains that can run.
On the other hand, an overestimated SRT (too much time) takes up unneeded capacity when other trains could be using the line.
The collective cost of these inefficiencies was significant. It also hid a massive amount of untapped capacity within the existing rail network.
A recalculation of SRTs, and the resultant change in timetabling and capacity, would clearly have a transformational impact on the freight sector.
Turning research on its head
Building on previous successful research that enabled longer, heavier freight trains to run in existing SRTs, our team decided to flip the logic.
We showed that, by using the full capabilities of modern equipment, we could safely reduce SRTs without shortening the train length, in some cases even lengthening the train.
We used our findings to create a new tool, the RSSB Sectional Running Time Calculator. It offers operators a way to calculate more accurate, evidence-based journey times.
Route planners can cut the fat from the timetable while ensuring enough buffer time is included to maintain resilience against minor disruptions.
To validate the new approach, five case studies were conducted across the GB rail network. The results were conclusive. Every analysed route offered opportunities for improved assumptions and a significant overall reduction in journey time.
By delivering more accurate timings, the new SRTs provide faster services, increased pathing, and improved resilience. This unlocks estimated benefits worth up to £16 million per year for the industry.
The methodology has already been successfully implemented by major operators such as Freightliner, and by Network Rail in their Wales and Borders region.
Josh Bliszko, Programme Manager at Network Rail Wales, said: ‘This is really helping us improve the performance of freight services while increasing opportunities to grow rail freight across the Wales and Borders route. It supports our local economies and accelerates the drive to reduced carbon emissions.
Our research is increasing freight pathing opportunities, accelerating local economies, and supporting the national drive toward reduced carbon emissions—all without needing a penny of additional infrastructure spend.