This is an HTML version of an attachment to the Official Information request 'Information of causes of fatal and non-fatal accidents'.
Fatal and non-fatal crashes in 2023
Cover sheet
Page 1 of 2
Report Date:
7/02/2024
Data extract date:
7/02/2024
Requester:
DriveLife Limited
Request:
Can you please supply data around the causes of fatal and non-fatal accidents for the 
2023 calendar year.
This could be summarised, e.g. numbers caused by excessive speed, driver error etc.
If you could deliver this information in an Excel spreadsheet, that would be very 
helpful.
You've supplied this previously for the 2019 year; the same format but with updated 
data would be perfect.
ACT 1982
Source database:
CAS
Report produced by:
Data Services
Peer reviewed by:
Data Services
Please note the fol owing concerning the data contained in this spreadsheet:
• This data is provided from the road traffic crash database; Crash Analysis System (CAS) version 2.6.2
• NZ Transport Agency Waka Kotahi (NZTA) maintains the Crash Analysis System which is updated once a
Traffic Crash Report (TCR) is received from NZ Police sometime after the crash.
• Data is for all crashes in 2023 as recorded in CAS to date - 7/02/2024.
• A crash, to be recorded in CAS must have occurred on a road. The CAS definition of a road is any
INFORMATION   street,
motorway or beach, or a place to which the public have access with a motor vehicle, whether as of right or
not e.g. a public car park.
• The cause of a crash cannot necessarily be attributed to any one factor (eg fatigue) as a crash may have
multiple factors.
• Factors are counted once against a crash - i.e. two fatigued drivers count as one fatigue crash factor.
• Due to the police reporting time frame and subsequent data processing there is a lag from the time of a
crash to full and correct crash records within CAS.
• Fatal crash report data is usually recorded in CAS within one working day of NZTA receiving it from NZ
Police.  Serious Injury and Minor injury crash report data is usually recorded in CAS within 4 weeks. Data
relating to non-injury crashes may take up to 7 months before it appears in CAS.
• 2023 data is not yet complete in CAS but these are the current figures from CAS as at 7/02/2024.
For further information, please contact 
[email address]
RELEASED UNDER THE OFFICIAL 

Fatal and non-fatal crashes in 2023
Data1
Page 2 of 2
This information must be read in conjunction with the Caveats on the first page of this spreadsheet
2023 Crashes
Year
Fatal crashes
Serious 
crashes
Minor crashes
Non-injury 
crashes
Total crashes
2023*
297
2,058
8,404
10,537
21,296
* 2023 data is not yet complete in CAS but these are the current figures from CAS as at 7/02/2024.
Factors contributing to 2023 crashes
ACT 1982
Road safety factor groups
Fatal crashes
Serious 
crashes
Minor crashes
Non-injury 
crashes
Total
Alcohol and/or Drugs
160
913
1,831
1,639
4,543
Disabled, old age or il ness
2
72
315
251
640
Failed to give way or stop
36
370
1,992
1,685
4,083
Fatigue
15
59
448
473
995
Incorrect lanes or position
38
330
1,647
2,430
4,445
Miscellaneous factors
41
138
450
897
1,526
Overtaking
9
66
133
175
383
Pedestrian factors
13
159
346
38
556
Poor handling
76
416
1,487
1,925
3,904
Poor judgement
29
285
1,044
1,376
2,734
INFORMATION 
Poor observation
36
486
2,688
3,149
6,359
Position on Road
98
297
828
954
2,177
Road factors
42
225
889
1,138
2,294
Inappropriate Speed
79
471
1,460
1,707
3,717
Vehicle factors
25
89
319
533
966
Weather
9
76
366
463
914
TOTAL factors
708
4,452
16,243
18,833
40,236
Factors are counted once against a crash - i.e. two fatigued drivers count as one fatigue crash factor.
The numbers under the headings are the number of crashes where that factor was a contributing factor to the crashes 
of that severity. The Total is the sum of all the factors contributing to crashes.
Because a crash may have multiple factors there wil  be more total factors than crashes resulting in factors totalling 
more than 100% of all crashes
RELEASED UNDER THE OFFICIAL 

Document Outline