MAIN ROADS
Western Australia
Survey and Mapping Specification 67-08-46
QUALITY STATEMENT
This document is owned and controlled by the Survey and Mapping Manager.
The Senior Geodetic Surveyor is the delegated custodian.
All comments for revision should be submitted to the Senior Geodetic Surveyor.
Authorisation
As Executive Director Planning and Practice Main Roads Western Australia, I authorise the
issue and use of this standard.
.............................……….………………
EXECUTIVE DIRECTOR PLANNING AND PRACTICE
Date: _____/ _____/ _____
MAIN ROADS Western Australia
Quality Statement
116104944
Document 67-08-46 - Issue 1 Rev 1
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REVISION STATUS RECORD
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Description/Reference
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“Nil” added to References and Definitions
Authorised by:___________________
Survey and Mapping Manager
MAIN ROADS Western Australia
Quality Statement
116104944
Document 67-08-46 - Issue 1 Rev 1
Date
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CONTENTS
1.
PURPOSE .................................................................................................................... 4
2.
SCOPE ......................................................................................................................... 4
3.
REFERENCES............................................................................................................. 4
4.
DEFINITION ............................................................................................................... 4
5.
QUALITY STATEMENT ........................................................................................... 5
5.1
Required Information ................................................................................................... 5
6.
APPENDIX
Appendix A
Example 1 Quality Statement ...................................................................... 6
Example 2 Quality Statement ...................................................................... 7
MAIN ROADS Western Australia
Quality Statement
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Document 2300/05/08 - Issue 1
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1.
PURPOSE
The purpose of this Specification is to detail the required Quality Statement that shall
accompany all Survey and Mapping data supplied to the Main Road Western Australia .
2.
SCOPE
This specification shall apply to all Survey and Mapping data supplied to the Main Roads
Western Australia.
For further information, contact the Data Services Manager.
3.
REFERENCES
The following Departmental documents relate to this procedure:
Nil
4.
DEFINITIONS
The following terms used in this procedure have the specific meanings indicated:
Nil
MAIN ROADS Western Australia
Quality Statement
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Document 2300/05/08 - Issue 1 Rev 1
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5.
QUALITY STATEMENT
5.1
Required Information
All data supplied to the Main Roads Survey and Mapping Branch shall be
accompanied by a Quality Statement. The Quality statement shall contain a description
of the data , its source, currency and accuracy statements.
Sufficient information shall be included in the Quality Statement to adequately define:

Lineage :
A history of the source, capture methods and processing steps used to produce the data

Positional accuracy:
Written positional accuracy statement.

Attribute accuracy:
A statement of the measure of confidence in the interpretation and accuracy of the
attribute data.

Logical consistency:
A statement to determine the faithfulness of the data. This generally deals with data
inconsistencies in typical spatial data cleaning operations, eg: incorrect line
intersections , lines entered twice, undershoots, overshoots, and slither polygons.

Completeness:
Comments on the completeness of the dataset with regards to selection criteria, gaps in
either data elements or attribute values, use of both standard and non standard codesets.
Completeness refers to the dataset as a whole, not to individual elements.
See Appendix A for examples of Quality Statements.
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Quality Statement
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EXAMPLE 1
Quality Statement
Project Number
: T231440 (Survey Reference or BSS number issued to the project )
Project Type
: Road Reference Mark Survey and Third Order Levelling ( Type of Survey or
project)
Project Description
: Placement and Third order Levelling of Road Reference Marks (Random
Construction control) on Great Northern Highway slk 115 to 121. Reference Mark
Numbers H006-285 to H006-300
Date of Capture
: October 17 - 23 1997 ( Date of survey, aerial photos or capture of the data)
Road Number(s)
: H006 (MRWA road number)
SLK
: 115 to 121 (start and finish SLK of the project)
Capture Method
: Survey Carried out in accordance with the Survey and Mapping Specification
67-08-36 Road Reference Marks and 67-08-38 Third Order Levelling (brief
Description of the method of survey or data capture)
Datum Used
: AHD84 Zone 50 /AHD (Geographic datum’s used to capture the data in)
Surveyor
: J Bloggs (Name of Surveyor(s) or person responsible for data capture)
Instruments
: Ashtec GPS receivers and Wild Na3000 electronic level. Geolab software (list of
instruments and software used)
Field Book No.
: 291543, 291444 (field book and Level book used )
Accuracy Statement
: Surveyed and adjusted in accordance with accuracy requirements as specified in
Survey and Mapping Specification 67-08-38 and 67-08-36. ie Class C Order 3 for
horizontal precision and Class C Order 3 for vertical precision. (positional
accuracy statement)
Attribute Accuracy
: Road Reference Mark attributes in regards to construction type, referencing and
location are as specified in the Location summaries (attribute accuracy statement)
Logical Consistency
: NA (logical Consistency statement )
Completeness
: NA (Completeness Statement )
MRWA Project No.
:
( MRWA project number if available - from FMS )
MRWA Project Name
:
(MRWA project name if available - from FMS )
Comments
:
(additional comments or clarifying statements if required)
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EXAMPLE 2
Quality Statement
Project Number
: T239999
Project Type
: Detail Ground Survey
Project Description
: Detail Survey of the intersection of Albany Highway and Teddington St . Town
of Victoria Park
Date of Capture
: January 15 - 16 1997
Road Number(s)
: H001 - Shepperton Rd
: 1290161 Teddington St
SLK
: 1.40 - 1.80 Shepperton Rd
: 0.15 - 0.4 Teddington St
Capture Method
: Survey Carried out in accordance with the Survey and Mapping Specification
67-08-43 Digital Ground Survey Data and 67-08-37 Minor Control
Datum Used
: PCG /AHD
Surveyor
: J Bloggs
Instruments
: Wild T2000 Total Station, GRE3 data recorder and Sokkisha N3 level.
Processed using SMIGS software
Field Book No.
: 291543, 291444
Accuracy Statement
: Surveyed and adjusted in accordance with accuracy requirements as specified in
Survey and Mapping Specification 67-08-43 and 67-08-37.
Attribute Accuracy
: Surveyed in accordance with Survey and Mapping Specification 67-08-43 and
field checked for the validity of the attribute interpretation.
Logical Consistency
: A graphical examination and editing of data using SMIGS software. Producing
and examining a 1:100 scale plot to ensure no visible inconsistencies of the arcs or
points. No automated cleansing or topology checks undertaken.
Completeness
: A detail survey of all visible ground features, within the confines of the survey
area. Carried out in accordance with Survey and Mapping Specification 67-08-43,
using the MOSS labels current at the date of survey
MRWA Project No.
:
( MRWA project number if available - from FMS )
MRWA Project Name
:
(MRWA project name if available - from FMS )
Comments
:
(additional comments or clarifying statements if required)
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