What is quality scoring?
At the start of the 2014/15 survey year it was proposed that a quality score system be introduced for SCANNER to provide an objective measure of the level to which contractors are delivering the requirements of the SCANNER Quality Assurance process defined in volume 4 of the SCANNER specification
SCANNER surveys for Local Roads User Guide and Specification Volume 4: Technical Requirements for SCANNER Survey Data and Quality Assurance 2011
It should be noted that the Quality Score is solely a measurement of the level to which the SCANNER contractor has met the delivery and monitoring requirements of the QA process:
The quality score process was run on a trial basis during 2014/15 survey to obtain an understanding of the behaviour of the measure, and is being published to stakeholders from the start of the 2015/16 survey year.
What are the current SCANNER quality scores?
The table below shows the quality score achieved by the current survey contractors operating accredited SCANNER devices for the current and previous survey years. (*Ginger-Lehmann have acquired Yotta Surveying. Accredited devices remain the same)
2019/20 Survey Results |
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Survey contractor |
Q1 (Apr-Jun) |
Q2 (July-Sept) | Q3 (Oct-Dec) | Q4 (Jan-Mar) |
WDM | 98.6 | 99.6 | ||
Ginger-Lehmann | 99.5 | 98.0 |
2018/19 Survey Results |
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Survey contractor |
Q1 (Apr-Jun) |
Q2 (July-Sept) | Q3 (Oct-Dec) | Q4 (Jan-Mar) |
WDM | 99.1 | 99.5 | 100 | 99.0 |
Ginger-Lehmann* | 99.5 | 99.0 | 99.0 | 98.5 |
2017/18 Survey Results |
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Survey contractor |
Q1 (Apr-Jun) |
Q2 (July-Sept) | Q3 (Oct-Dec) | Q4 (Jan-Mar) |
WDM | 98.5 | 99.2 | 99.8 | 99.1 |
Yotta | 100 | 99.8 | 100 | 99.3 |
|
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Survey contractor |
Q1 |
Q2 (July-Sept) |
Q3 (Oct-Dec) |
Q4 (Jan-Mar) |
WDM |
98.3 |
97.8 |
99.2 |
99.0 |
Yotta |
99.0 |
98.5 |
99.3 |
100 |
2015/16 Survey Results |
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---|---|---|---|---|
Survey contractor |
Q1 |
Q2 (July-Sept) |
Q3 (Oct-Dec) |
Q4 (Jan-Mar) |
WDM |
96.2 |
97.4 |
99.3 |
98.7 |
Yotta |
97.3 |
98.0 |
99.3 |
99.5 |
2014/15 Survey Results |
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Survey contractor |
Q1 |
Q2 (July-Sept) |
Q3 (Oct-Dec) |
Q4 (Jan-Mar) |
WDM |
97.2 |
97.0 |
97.8 |
97.7 |
Yotta |
99.5 |
98.2 |
97.2 |
96.3 |