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9309.0 - Motor Vehicle Census, Australia, 31 Mar 2010 Quality Declaration 
Previous ISSUE Released at 11:30 AM (CANBERRA TIME) 01/02/2011   
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TECHNICAL NOTE 2 ACT DATA


INTRODUCTION

1 A minor error in the calculation of registered motor vehicles for the Australian Capital Territory was identified for previous years. This Technical Note outlines the problem and the likely impact on vehicle registration numbers in ACT for MVCs conducted from 31 March 2004 to 31 March 2007.


ISSUE

2 Vehicles on register are defined as those vehicles registered at the date of the census, or had registration expire less than one month before that date. For ACT however, vehicles for which registration expired prior to 31 March were incorrectly removed by processing systems used before MVC 2008.


IMPACT

3 For each MVC conducted from 2004 to 2007, approximately 2% of ACT registrations had been omitted. The error has had little impact on ACT annual fleet growth rates.

4 The impact of the error on ACT data has been estimated in the following table.

ACT registrations, Type of vehicle - Census years

2004
2005
2006
2007
Vehicle type(a)
no.
no.
no.
no.

Additional registrations

Passenger vehicles
3 893
3 864
3 988
4 160
Campervans
19
13
22
21
Light commercial vehicles
523
502
567
572
Light rigid trucks
13
18
16
16
Heavy rigid trucks
34
42
31
35
Articulated trucks
5
4
4
8
Non-freight carrying trucks
1
4
-
1
Buses
15
6
11
14
Motor cycles
352
423
444
462
Total motor vehicles
4 855
4 876
5 083
5 289

Revised motor vehicle registrations

Passenger vehicles
189 496
192 505
195 751
200 015
Campervans
526
518
496
480
Light commercial vehicles
19 399
19 974
20 755
21 347
Light rigid trucks
642
627
643
651
Heavy rigid trucks
1 763
1 729
1 755
1 724
Articulated trucks
241
242
239
233
Non-freight carrying trucks
102
96
97
89
Buses
931
929
957
948
Motor cycles
7 444
7 808
8 466
9 147
Total motor vehicles
220 544
224 428
229 159
234 634

- nil or rounded to zero (including null cells)
(a) Estimates only. Based on motor vehicle registry broad vehicle descriptions.


5 Note that 2005 data for ACT presented in this publication does not include the additional registrations presented in this technical note.


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