Description Usage Format Source See Also
A dataset of 540888 crashes, recorded by the New Zealand Transport Agency (NZTA).
Other attributes in a many-to-one relationship with the crashes are
available in the datasets vehicles
,
causes
, and objects_struck
.
1 |
A data frame with 540888 rows and 30 variables:
TLA (Territorial Local Authority) where the crash took place. See http://www.stats.govt.nz/methods/classifications-and-standards/classification-related-stats-standards/territorial-authority.aspx for more information about TLAs.
Road name where the crash took place.
Distance in metres from a landmark or an intersection as indicated by the columns "landmark" and "side_road".
Compass direction, as above.
Whether a landmark or an intersection with a side road.
Landmark or intersection with a side_road, near to the site of the crash.
Unique number identifying the crash, by which other tables can be joined (vehicles
, causes
, and objects_struck
).
Date of the crash. More reliable than datetime
, which is NA
when time
is NA
.
Time of the crash to the nearest minute. Not always available.
Initial direction of the principal vehicle in the crash.
Road of the principal vehicle in the crash (first or second, i.e. main or side street).
Severity of the curvature of the road where the crash took place.
How wet the conditions were at the time of the crash.
Level of ambient light at the time of the crash.
Level of artificial light at the time of the crash.
One type of weather at the time of the crash.
Another type of weather at the time of the crash.
Type of the junction at which the crash took place.
Traffic control at the site of the crash (e.g. stop sign). Only one is given, but there is a hierarchy – see the data dictionary linked to above.
Road marking at the site of the crash (e.g. pedestrian crossing). Only one is given, but there is a hierarchy – see the data dictionary linked to above.
Speed limit in force at the site of the crash.
Number of people killed in the crash, or who died within 30 days of injuries suffered in the crash.
Number of people severely injured.
Number of people with minor injuries from the crash.
Age of the youngest pedestrian under 20, otherwise the oldest one.
Age of the youngest cyclist under 20, otherwise the oldest one.
Date and time of the the crash.
Easting of the crash site in EPSG:4326 projection (WGS 84, Gooogle Maps)
Northing of the crash site in EPSG:4326 projection (WGS 84, Gooogle Maps)
General movement happinging in the crash.
Detail of the movement happinging in the crash.
The severity of the worst injury in the crash.
http://www.nzta.govt.nz/resources/crash-analysis-system-data/
A comprehensive data dictionary is provided by the NZTA at
http://www.nzta.govt.nz/assets/resources/guide-to-coded-crash-reports/docs/guide-to-coded-crash-reports.pdf.
A copy of it is distributed with this package in the extdata
directory.
Details about how crash reports are completed are provided by the NZTA at
http://www.nzta.govt.nz/assets/resources/traffic-crash-reports/docs/traffic-crash-reports.pdf.
A copy of it is distributed with this package in the extdata
directory.
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