crashes: Motor vehicle crashes in New Zealand since the year 2000.

Description Usage Format Source See Also

Description

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.

Usage

1

Format

A data frame with 540888 rows and 30 variables:

region

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

Road name where the crash took place.

distance_from_landmark

Distance in metres from a landmark or an intersection as indicated by the columns "landmark" and "side_road".

direction_from_landmark

Compass direction, as above.

landmark

Whether a landmark or an intersection with a side road.

side_road

Landmark or intersection with a side_road, near to the site of the crash.

id

Unique number identifying the crash, by which other tables can be joined (vehicles, causes, and objects_struck).

date

Date of the crash. More reliable than datetime, which is NA when time is NA.

time

Time of the crash to the nearest minute. Not always available.

direction

Initial direction of the principal vehicle in the crash.

street

Road of the principal vehicle in the crash (first or second, i.e. main or side street).

curvature

Severity of the curvature of the road where the crash took place.

wetness

How wet the conditions were at the time of the crash.

light_ambient

Level of ambient light at the time of the crash.

light_artificial

Level of artificial light at the time of the crash.

weather_1

One type of weather at the time of the crash.

weather_2

Another type of weather at the time of the crash.

junction_type

Type of the junction at which the crash took place.

traffic_control

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

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

Speed limit in force at the site of the crash.

fatalities

Number of people killed in the crash, or who died within 30 days of injuries suffered in the crash.

severe_injuries

Number of people severely injured.

minor_injuries

Number of people with minor injuries from the crash.

pedestrian_age

Age of the youngest pedestrian under 20, otherwise the oldest one.

cyclist_age

Age of the youngest cyclist under 20, otherwise the oldest one.

datetime

Date and time of the the crash.

easting

Easting of the crash site in EPSG:4326 projection (WGS 84, Gooogle Maps)

northing

Northing of the crash site in EPSG:4326 projection (WGS 84, Gooogle Maps)

movement_category

General movement happinging in the crash.

movement_description

Detail of the movement happinging in the crash.

severity

The severity of the worst injury in the crash.

Source

http://www.nzta.govt.nz/resources/crash-analysis-system-data/

See Also

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.


nacnudus/nzcrash documentation built on May 23, 2019, 12:04 p.m.