1、Cost benchmarking of Network Rails maintenance and renewals expenditure Annual report:year 3 of Control Period 6(2021-22)14 November 2022 Office of Rail and Road|2 Contents Executive summary 3 1.Introduction 8 2.Maintenance 19 Route-level analysis.19 MDU-level analysis.32 3.Renewals 50 Annex A:Route

2、 models results comparison 67 Annex B:Network Rails geographic routes and regions 68 Annex C:Mapping of Network Rails regions,routes and MDUs 69 Office of Rail and Road|3 Executive summary Context 1.The Office of Rail and Road holds Network Rail to account for its management of the rail network in G

3、reat Britain.Understanding the main drivers of Network Rails expenditure(including the reasons expenditure changes from year to year)and assessing the scope for it to improve its efficiency are central to this work.To achieve this,we use different analytical approaches,ranging from a bottom-up asses

4、sment of Network Rail business plans,projects and efficiency improvement measures to top-down cost benchmarking using statistical methods.2.This report presents our latest cost benchmarking statistical analysis,which compares maintenance expenditure and conventional track renewals unit costs(in simp

5、le terms,renewals expenditure divided by work volume)over time and across Network Rails regions,routes and maintenance delivery units(MDUs),after normalising1 for the effect of the observable underlying differences between them2.3.The methodology in this years report is broadly similar to the method

6、ology in our year 2 of CP6 cost benchmarking report that we published in July 2021.4.Our cost benchmarking was one part of the evidence that informed our initial advice to the UK and Scottish governments over the summer,as they prepare their funding and high-level output specifications for the next