scope:

This work instruction applies to all lines where Network Rail is responsible for maintenance and renewal of the track. It covers annual and short-term planning and applies to the Engineering, Maintenance and Information Management teams.

It sets out the national process for:

• Identifying planned traffic flows and their effect on track category

• Identifying changes in traffic flows and their effect on track category

• Updating the Traffic Database

• Evaluating the impact of identified changes

• Distributing information regarding identified changes in track category and related traffic information

Purpose

To define the process for identifying, evaluating and providing information about track category, planned traffic flows and short-term changes to traffic. This enables informed decisions to be made about asset stewardship, inspection, maintenance and renewal.