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Roading data quality reports

These reports are the result of the Road Efficiency Group’s (REG) assessment of each Road Controlling Authority’s (RCA) One Network Road Classification (ONRC), related performance measure data plus asset management and decision support systems data.

Practice overview – Data quality framework

This overview document is intended to provide high level support and direction to better understand the intent and purpose of the data quality framework developed by the Road Efficiency Group (REG).

Practice overview – Data quality dimensions

This overview document is supplementary to the Data quality framework overview document and is intended to provide a more detailed level of support and direction to better understand the three quality dimensions of accuracy, completeness and timeliness.

Practice overview – Understanding the data quality results

This overview document is supplementary to the Data quality framework overview document and is intended to provide a more detailed level of support and direction in reading and understanding the results of the annual data quality reports.

Practice overview – Carriageway sections

This overview document is intended to provide high level support and direction to better understand the criticality of defining carriageway sections and attributes, and how to maintain this dataset.

Practice overview – Treatment length management

This overview document is intended to provide high level support and direction to better understand the criticality of treatment lengths, and how to management them.

Practice overview – Surfacing data

This overview document is intended to provide high level support and direction to better understand the criticality of pavement surfacing data, and how to maintain this dataset.

Practice overview – Work origin and original cost

This overview document is intended to provide high level support and direction to better understand the criticality of populating the work origin and original cost fields.

Practice overview – Traffic count data

This overview document is intended to provide high level support and direction to better understand the criticality of robust traffic count data at a network level, and how to develop a traffic count strategy and structured count programme.

Practice overview – Traffic estimate data

This overview document is intended to provide high level support and direction to better understand the criticality of robust traffic estimate data and how to maintain this dataset.

Practice overview – Maintenance activity data

This overview document is intended to provide high level support and direction to better understand the criticality of maintenance activity data, and how to maintain this dataset.

Practice overview – Crash data

This overview document is intended to provide high level support and direction to better understand the criticality of crash data within Road Assessment and Maintenance Management (RAMM), and how to maintain this dataset.

Data quality metric library

This resource provides detail about each data quality metric. For each metric the following information is provided: metric reference, report, category/sub-category, expanded description, data/tables interrogated, specific exceptions, dimension, asset management importance, grade ranges, data quality metric RAMM SQL, record by record exceptions RAMM SQL.

Data quality sector survey results

REG developed a survey for the sector to gain a greater understanding of the root causes for inconsistent data quality to support the development of a sector-wide improvement programme.

ONRC data quality reported metric change register

Changes to the ONRC data quality framework, metrics and reports are outlined in the change register.

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