Australian Bureau of Statistics
9309.0 - Motor Vehicle Census, Australia, 31 Jan 2011 Quality Declaration
Previous ISSUE Released at 11:30 AM (CANBERRA TIME) 28/07/2011
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3 The Motor Vehicle Census includes all vehicles registered with a state or territory motor vehicle registry for unrestricted use on public roads with the following exceptions:
4 Vehicles on register are defined as those vehicles registered at the date of the census, or which had registration expire less than one month before that date. Data for Tasmania does not include vehicles which had registration expire less than one month before that date.
5 Motor vehicle registration statistics are derived from data made available by various state and territory motor vehicle registration authorities and reflect the information as recorded in registration documents.
6 Vintage and veteran vehicles are excluded from vehicle counts in the published data, but are available for consultancy data requests. These vehicles are identified using a unique insurance code, with the following exceptions:
7 The estimated proportion of motor vehicles, excluding motor cycles, taken off the register since the previous MVC is referred to as the attrition rate. The attrition rates in the following table have been calculated using Motor Vehicle Census and New Motor Vehicle Sales data. Motor cycles are excluded from the attrition rate calculation as they are not included in New Motor Vehicle Sales data.
8 The 2011 Motor Vehicle Census is a count of all in-scope vehicles registered with a state or territory motor vehicle registration authority (MVR) at 31 January 2011. All records are compared to previous MVC data for vehicles that match (on-going registrations) and details are updated for these vehicles where applicable.
9 The unmatched records (new vehicle registrations) undergo editing of individual data items. The editing of on-going registrations is limited as these records have been edited in previous years. Aggregate data is checked across time, states and vehicle types to ensure coherency.
10 The primary use of the MVC is as a frame for the Survey of Motor Vehicle Use (SMVU). Editing of the data is designed to maximise data quality to the level required for the SMVU. The size of the fleet (over 16 million vehicles) dictates that quality assurance of each record is not possible. Therefore, while the data are made available at a detailed level, the ABS is unable to guarantee that it is necessarily sufficient for all purposes for which it is used. There is also some variation in the reporting from different state and territory registries and care should be taken when comparing data across jurisdictions.
11 The information provided to the ABS and included in the estimates for any month may be revised or corrected in later months. Where corrections are made to original data they will be identified by the annotation (r) revised.
12 Geographic data available from the MVC are postcode of owner and state or territory of registration.
13 If analysis of regional data based on postcodes is being undertaken, the following considerations need to be taken into account:
14 This publication draws extensively on information provided freely by the state and territory motor vehicle registration authorities. Their continued cooperation is very much appreciated. Without it, many of the transport statistics published by the ABS would not be available.
RELATED PUBLICATIONS AND PRODUCTS
15 Users may also wish to refer to the following publications and products which contain information relating to motor vehicles in Australia:
ABS DATA AVAILABLE ON REQUEST
16 As well as the statistics included in this publication, the ABS has other relevant data available on request. Inquiries should be made to the National Information and Referral Service on 1300 135 070.
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This page last updated 21 August 2012