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Track Segments: Overview

What is a Track Segment?

A Track Segment is a defined section of the railway network, used to manage and organise Track Intervals data. Where structure gauging assigns Slices to Structures, Track Intervals assigns Slices to Track Segments.

Track Segments are generated from the Network Model (a digital reference map of the network with mileage recorded at every point), split into fixed-length sections and paired with their adjacent running track. Each Track Segment pairing represents a stretch of track where two running lines sit close enough together that passing clearance needs to be checked.

In the same way .SC0 Structure Slices are assigned to Structures, .SCX Interval Slices are assigned to Track Segments.

How to view a Track Segment in Track Segment Viewer

  1. To open an exiting Track Segment, users need to first open the Track Segments index page. Open the main menu in Cordel connect and navigate to Gauging> Track Segments.

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Select Track Segments from the Gauging module

  1. Search for the Track Segment(s) required using the search filters on the Track Segments index page.

  2. Click the corresponding row to open the Track Segment in the Track Segment Viewer.

Key Facts

Assigning Slices to Track Segments allows networks to:

  • Passing clearance assessment: reviewing the spacing between adjacent tracks to confirm rolling stock has adequate clearance to pass safely. Cordel Connect does not perform this assessment directly; it prepares and quality-checks the data for assessment in downstream software (for example, D/Gauge).

  • Change detection: comparing current Survey data against historical Surveys to identify whether track intervals have changed.

  • Compliance reporting: providing evidence that track intervals meet clearance requirements, and flagging segments due for re-survey.

  • Data export: passing structured clearance data to third-party tools for advanced kinematic assessment.

Track Segments are how individual Slice measurements are connected to defined sections of the network, and that connection is what makes Track Intervals data usable for safety and asset management decisions.