The Traffic and Travel Data System API lets you access real time data on events / incidents that affect traffic conditions across the network of national highways in New Zealand. An example of an event/incident could include road works, an accident, or weather related problems such as ice or snow.Traffic and Travel Data System API services currently include:· Real time data on traffic conditions and congestion on national highways.· Estimates of the time required for vehicles to travel along sections of the state highway and arterial network.· Real time data on events and incidents, including weather and general warnings, that affect traffic conditions across the network of national state highways.· Static images from over 100 cameras across various parts of New Zealand.·
Messaging displayed on Variable Message Signs (VMS) across various parts of New Zealand.Available RESTful API services· Endpoint address: https://trafficnz.info/service/traffic/rest/4· WADL: https://trafficnz.info/service/traffic/rest/4?_wadlWe have several SOAP API services available as well. Details are described at this site: https://www.nzta.govt.nz/traffic-and-travel-information/use-our-data/about-the-apis/Usage CaveatsThis information is ONLY for notable events and/or incidents that may cause delays to road users or require caution, and only where the details have been verified by the Waka Kotahi or another official source.Data QualityAs of 3 October 2024, previous known quality issues have been repaired where there were null or missing values. These fields are now showing valid values:

     -

Event Comment - Alternative Route - Event ModifiedResourcesThis data service is intended for data architects and developers that must integrate their applications with the Traffic and Travel Data web services API.Data elements included in each API Service are listed on the NZTA information page: https://www.nzta.govt.nz/traffic-and-travel-information/use-our-data/about-the-apis/

We are happy to have your feedback on this NZTA Open Data product. Please contact us at opendata@nzta.govt.nz.

See our: Crash Analysis System (CAS) data user guide

This data comes from the Waka Kotahi Crash Analysis System (CAS), which records all traffic crashes reported to us by the NZ Police. CAS covers crashes on all New Zealand roadways or places where the public have legal access with a motor vehicle.

The data updates monthly, in the first week of each month.

Data is currently available from 1 January 2000. The dataset includes crash variables that are non-personal data.

To give you a quick overview of the data, see the charts in the ‘Attributes’ section below. These will give you information about each of the attributes (variables) in the dataset.

Each chart is specific to a variable, and shows all data (without any filters applied).

Crash Analysis System data - field descriptions

Data reuse caveats: we’ve taken reasonable care in compiling this information, and provide it on an ‘as is, where is’ basis. We're not liable for any action taken on the basis of the information. For further information see the terms of the CC-BY 4.0 International license.

CC-BY 4.0 International licence details

Variables in the dataset are formatted for analytical use. This can result in attribute charts that may not appear meaningful, and are not suitable for broader analysis or use. In addition, some variables aren't mutually exclusive – do not consider them in isolation.

You must not take and use these charts directly as analysis of the overall data.

Data quality statement: we aim to process all fatal crashes within one working day of receiving the crash report from NZ Police.

We aim to process all injury crashes (serious and minor injury) within 4 weeks of receiving the crash report.

It may take up to seven months for non-injury crashes to be processed into CAS.

Up-to-date information on current number of outstanding crash reports

Most unprocessed crash reports will be for crashes where there weren’t any injuries.

Data quality caveats: this data comes from the road traffic crash database Crash Analysis System (CAS) version 2.1.0. As the data is live, data can sometimes change after we receive it – that is, the data is not static after we publish it.

Waka Kotahi NZ Transport Agency maintains the Crash Analysis System. This open data is an appropriately confidentialised version of that.

After a crash, NZ Police send us a Traffic Crash Report (TCR). This may not happen immediately.

A crash must have happened on a road to be recorded in CAS. The CAS definition of a road is any street, motorway or beach, or a place that people can access with a motor vehicle.

There is a lag between the time of a crash to CAS having full and correct crash records. This is due to the police reporting time frame, and data processing.

People don’t report all crashes to the NZ Police. The level of reporting increases with the severity of the crash.

Crash severity is the severity of the worst injury in the crash. There may be more than one injury in a crash.

2020 and 2021 data is incomplete.

For API explorer users, there is a known issue with number-based attribute filters where the “AND” operator is used instead of the “BETWEEN” operator. Substituting “BETWEEN” for “AND” manually in the query URL will resolve this.Update 13/07/2021: previously, there was a 5 month buffer between our internal CAS data and our CAS open data. We have reduced this buffer to 1 month, due to user demand and improved systems.Update 10/12/2020: field type change. The field type for ‘crashFinancialYear’ has changed from integer to text.

A point-in-time ‘snapshot’ of all vehicles currently registered in New Zealand. The data relates to currently-registered vehicles as recorded on the Motor Vehicle Register (MVR).We update it monthly, so it's accurate up to the end of the previous month. Download this data as zipped CSV filesRegistration is the process where we add a vehicle’s details to the MVR and issue its number plates. It is not the same thing as vehicle licensing, also called ‘rego’.To give you a quick overview of the data, see the charts in the ‘Attributes’ section below. These will give you information about each of the attributes (variables) in the dataset.Each chart is specific to a variable, and shows all data (without any filters applied).Motor Vehicle Register data - field descriptions Data reuse caveats: as per license.We’ve taken reasonable care in compiling this information, and provide it on an ‘as is, where is’ basis. We are not liable for any action taken on the basis of the information. For further information see the Waka Kotahi website, as well as the terms of the CC-BY 4.0 International license under which we publish this data.CC-BY 4.0 International licence detailsVariables in the dataset are formatted for analytical use. This can result in attribute charts that may not appear meaningful, and are not suitable for broader analysis or use. In addition, some variables are not mutually exclusive and should not be considered in isolation. As such, these charts should not be taken and used directly as analysis of the overall data. Data quality statement: this data relates to vehicles, not people.We have included some information about vehicle registered owners live. This is based on the most recent information we have about their physical address. To make sure it isn’t possible to identify a person in the data, we have provided this at Territorial Authority (TA) level. A TA is a broad geographical area defined under the Local Government Act 2002 as a city council or district council. There are 67 TAs consisting of 12 city councils, 53 districts, Auckland Council and Chatham Island Council. We haven’t included vehicles that belong to people with a confidential listing. We have restricted the Vehicle Identification Number (VIN) to the first 11 characters – these are generic and don’t identify specific vehicles. Data quality caveats: many of the fields in the (MVR) are free text fields, which means there may be spelling mistakes and other human errors.We have algorithmically cleaned the data to correct identified errors (particularly with respect to a vehicle’s make and model). However, due to the large number of vehicles on the Register we may not have corrected some information.Additionally, some variables may be subject to differences in how people have recorded details – for example, manufacturers release a variety of sub-models and these may not be referred to, or put into the system, in the same way. We have made our cleaning code open source.Vehicle make and model cleansing code (GitHub)

Orthophotography flown for NZTA Roads between 17/11/2011 and 13/04/2012.

Image Resolution (Ground Sample Distance): 0.15m

Spatial Accuracy: +/- 1m

Nitrogen dioxide (NO2) is a gas that is harmful to human health (United States Environmental Protection Agency (US EPA), 2021), ecosystems, and plants (US EPA, 2008). It can be emitted directly into the air but is often formed as a secondary pollutant when nitric oxide (NO) emissions react with other chemicals. It also contributes to the formation of secondary particulate matter (PM) and ozone, which have their own health impacts. In New Zealand, motor vehicles are the main human-made source of nitrogen oxides (NOx) the collective term for NO2 and NO.

Human exposure to high nitrogen dioxide concentrations causes inflammation of the airways and respiratory problems and can trigger asthma attacks. Nitrogen dioxide can cause leaf injury in plants exposed to high levels. It also contributes to forming secondary particulate matter and ozone, which have their own health impacts.

Nitrogen dioxide is a gas primarily formed through burning fossil fuels, mainly by motor vehicles (particularly diesel), but also from industrial emissions. Because nitrogen dioxide concentrations are closely associated with vehicle emissions, it can be used as a proxy for other motor-vehicle pollutants such as benzene, carbon dioxide, and carbon monoxide.

More information on this dataset and how it relates to our environmental reporting indicators and topics can be found in the attached data quality pdf.

A copy of the New Zealand Vehicle Fleet database, downloaded from the Ministry of Transport web site (https://nzta.govt.nz/resources/new-zealand-motor-vehicle-register-statistics/new-zealand-vehicle-fleet-open-data-sets/) on 2017-12-14.Uploaded as an example for a manuscript on fitting generalised linear models to large data sets

Nitrogen dioxide (NO2) is a gas that is harmful to human health (United States Environmental Protection Agency (US EPA), 2021), ecosystems, and plants (US EPA, 2008). It can be emitted directly into the air but is often formed as a secondary pollutant when nitric oxide (NO) emissions react with other chemicals. It also contributes to the formation of secondary particulate matter (PM) and ozone, which have their own health impacts. In New Zealand, motor vehicles are the main human-made source of nitrogen oxides (NOx) the collective term for NO2 and NO.

Human exposure to high nitrogen dioxide concentrations causes inflammation of the airways and respiratory problems and can trigger asthma attacks. Nitrogen dioxide can cause leaf injury in plants exposed to high levels. It also contributes to forming secondary particulate matter and ozone, which have their own health impacts.

Nitrogen dioxide is a gas primarily formed through burning fossil fuels, mainly by motor vehicles (particularly diesel), but also from industrial emissions. Because nitrogen dioxide concentrations are closely associated with vehicle emissions, it can be used as a proxy for other motor-vehicle pollutants such as benzene, carbon dioxide, and carbon monoxide.

This dataset reports on the trends assessed for the period 2015-2020.

More information on this dataset and how it relates to our environmental reporting indicators and topics can be found in the attached data quality pdf.

The New Zealand Transport Agency (NZTA) is planning an alternative route to SH3 in Waikato, New Zealand.The project involves the construction of an alternative route to SH3. It also includes the construction of road separators, interchanges, road intersections and service roads, and the installation of signaling and safety systems.Initially in 2012 NZTA identified 13 alternate routes and in October 2017, four route options were shortlisted by NZTA, comprising:- Option 1: North of Saddle Road comprising 15.7km with a cost range of US$247 million-US$318 million- Option 2: Saddle Road Upgrade comprising 13.8km with a cost range of US$212 million-US$283 million- Option 3: South of Saddle Road comprising 12.4km with a cost range of US$247 million-US$318 million- Option 4: South of Gorge comprising 19.2km with a cost range of US$318 million-US$389 millionThe timeline to complete options 1, 2 and 3 is estimated at five to six years, while Option 4, the longest, is estimated to take six to seven years to complete on commencement of the construction.In March 2018, NZTA finalized the preferred alternative route as Option 3: South of Saddle Road comprising 12.4km with a cost range of US$247 million-US$318 million.Detailed business case and Public information sessions are underway. Construction is scheduled to commence in the first quarter of 2020 and to be completed by 2024. Read More

Nitrogen dioxide (NO2) is a gas that is harmful to human health (United States Environmental Protection Agency (US EPA), 2021), ecosystems, and plants (US EPA, 2008). It can be emitted directly into the air but is often formed as a secondary pollutant when nitric oxide (NO) emissions react with other chemicals. It also contributes to the formation of secondary particulate matter (PM) and ozone, which have their own health impacts. In New Zealand, motor vehicles are the main human-made source of nitrogen oxides (NOx) the collective term for NO2 and NO.

Human exposure to high nitrogen dioxide concentrations causes inflammation of the airways and respiratory problems and can trigger asthma attacks. Nitrogen dioxide can cause leaf injury in plants exposed to high levels. It also contributes to forming secondary particulate matter and ozone, which have their own health impacts.

Nitrogen dioxide is a gas primarily formed through burning fossil fuels, mainly by motor vehicles (particularly diesel), but also from industrial emissions. Because nitrogen dioxide concentrations are closely associated with vehicle emissions, it can be used as a proxy for other motor-vehicle pollutants such as benzene, carbon dioxide, and carbon monoxide.

This dataset reports on the annual trends assessed for the period 2011-2020.

More information on this dataset and how it relates to our environmental reporting indicators and topics can be found in the attached data quality pdf.

New Zealand Transport Agency (NZTA) is undertaking the construction of Waikato Expressway Road, Huntly Section project at Gordonton Road in Waikato Region of New Zealand. The project involves the construction of 15.2km four-lane road. The Huntly section of the Waikato Expressway commences approximately 500m north of Frost Road and passes to the east side of Huntly township before continuing through the Taupiri Range to meet the Ngaruawahia section at Gordonton Road.It involves 3.5million m3 of earthworks and a 60m deep pass through the Taupiri Range. It also includes over 100ha of the forest, bush and wetland enhancement and the permanent protection of a sacred lagoon and two paa. The project also includes the construction of supporting walls, carriageways, service roads, road separators, pedestrian ways, toll stations, laying of street lines and other related infrastructural facilities.NZTA awarded a contract to Opus International Consultants Ltd for investigation phase of the project.The Transport Ministry of New Zealand has allocated a funding of US$6.8 million in supporting the investigation & design of Huntly section to NZ Transport Agency in May 2010.Bloxam Burnett & Olliver (BBO) as a consultant for investigation and preliminary design and W. Gumbley ltd have been appointed as an archaeological consultant.In July 2014, the board of the New Zealand Transport Agency approved the project for design and construction of 15.2km Huntly section.In March 2015, Fulton Hogan, HEB Construction has been appointed as EPC Contractors and Jacobs Engineering Group Inc., Bartley consultants, Giga engineering & Construction Sdn Bhd as engineering designers for the project.On August 28, 2015, construction activities commenced. Construction activities are underway and are scheduled to be completed by 2020. Read More

Please note: this data differs in some of its columns from the Jan 2013 - Sep 2020 set. This data is a singular snapshot of a dataset published to promote innovation and research. It is not updated or expanded from the date range described.TMS traffic quarter-hourly (2013-2020)

Data reuse caveats: as per license.Data quality statement: please read the accompanying user manual, explaining:how this data is collectedidentification of count stationstraffic monitoring technologymonitoring hierarchy and conventionstypical survey specificationdata calculationTMS operation.Traffic monitoring for state highways: user manual [PDF 465 KB]Data quality caveats: you must use this data in conjunction with the user manual, and the following caveats.Much of this data is sourced from road sensors and may be subject to technical or environmental factors.Data is compiled from a variety of sources. Accuracy may vary and the data should only be used as a guide.Data is representative of the change of traffic volume not of total traffic volume for each region.Data is sourced from Waka Kotahi New Zealand Transport Agency TMS data.Light and heavy traffic volumes have been split using TMS data where vehicles with a length of less than 5.5m are classed as light vehicles. Heavy vehicles are over 11m long. Those between 5.5 and 11m are split 50:50 into light and heavy vehicles.Please be aware that when unzipped these are very large files and some systems may have difficulty opening it. Each file contains more than 10 million rows, and therefore won't work in Excel. However, each file is in CSV format, and will work in:programming languages such as Python or Rdatabases with SQL.State highway traffic monitoring (map)State highway traffic monitoring sitesState highway daily-updated traffic count (API and CSV)

Photo by Joseph Chan on Unsplash

The NZ Transport Agency, New Zealand (NZTA) is undertaking the electrification of the railway line from Papakura to Pukekohe in New Zealand.The project involves the electrification of a railway line from Papakura to Pukekohe.The project also involves the construction of related infrastructure, installation of poles and transformers and the laying of transmission lines.The project is in early stages of development. Read More

Under a New Zealand public agency’s cost estimation guidelines, a consultancy organization was required to complete an ‘elemental cost questionnaire’ after a project’s final account had been completed so that data could be incorporated into their ‘Elemental Cost Database’ and used to support the production of future estimates of outturn costs. Cost data from 39 transport projects is presented in a SPSS format.

Nitrogen dioxide (NO2) is a gas that is harmful to human health, ecosystems, and plants (US EPA, 2008). It can be emitted directly into the air but is often formed as a secondary pollutant when nitric oxide (NO) emissions react with other chemicals. It also contributes to the formation of secondary particulate matter (PM) and ozone, which have their own health impacts. In New Zealand, motor vehicles are the main human-made source of nitrogen oxides (NOx), the collective term for NO2 and NO. Because nitrogen dioxide concentrations are closely associated with vehicle emissions, it can be used as a proxy for other motor-vehicle pollutants such as benzene, carbon dioxide, and carbon monoxide. Human exposure to high nitrogen dioxide concentrations causes inflammation of the airways and respiratory problems, particularly asthma. Nitrogen dioxide causes leaf injury in plants exposed to high levels. It also contributes to forming secondary particulate matter and ozone, which have their own health impacts. We report on observed nitrogen dioxide concentrations from the New Zealand Transport Agency’s (NZTA) monitoring network. NZTA has comprehensive coverage across New Zealand. More information on this dataset and how it relates to our environmental reporting indicators and topics can be found in the attached data quality pdf.

The New Zealand Transport Agency (NZTA) is planning to upgrade a road in Waikato District, New Zealand.The project involves the upgrade of a 32km road section between Pokeno and Mangatarata. It includes the construction of a three-lane road, bridges, interchanges, road intersections, service roads, related infrastructure and the installation of signaling and safety systems.In April 2016, NZTA confirmed funding for the project.In March 2018, Environmental and geotechnical investigations were completed.The land purchase and detailed design works are underway. Read More

RCAs include all Territorial Authorities and Waka Kotahi NZ Transport Agency.The point geometry of this dataset represents the start and end points of each carriageway.National Road Centreline and RCA attributes - field descriptionsThe dataset updates every month.Data reuse caveats: as per license.Data quality statement: the October 2018 release holds 76% of RCA attribution; we are still working with the remaining RCAs to include their data.Data quality caveats: for API explorer users, there is a known issue with number-based attribute filters where the “AND” operator is used instead of the “BETWEEN” operator. Substituting “BETWEEN” for “AND” manually in the query URL will resolve this.

Please note: this data differs in some of its columns from the Oct 2020 - Jan 2022 dataset.

TMS traffic quarter-hourly: Oct 2020 to Jan 2022

Data reuse caveats: as per license.

Data quality statement: please read the accompanying user manual, explaining:

how this data is collected identification of count stations traffic monitoring technology monitoring hierarchy and conventions typical survey specification data calculation TMS operation.

Traffic monitoring for state highways: user manual [PDF 465 KB]

Data quality caveats: you must use this data in conjunction with the user manual, and the following caveats.

Much of this data is sourced from road sensors and may be subject to technical or environmental factors.Data is compiled from a variety of sources. Accuracy may vary and the data should only be used as a guide.Data is representative of the change of traffic volume not of total traffic volume for each region.Data is sourced from Waka Kotahi New Zealand Transport Agency TMS data.Light and heavy traffic volumes have been split using TMS data where vehicles with a length of less than 5.5m are classed as light vehicles. Heavy vehicles are over 11m long. Those between 5.5 and 11m are split 50:50 into light and heavy vehicles.

Please be aware that when unzipped these are very large files and some systems may have difficulty opening it. Each file contains more than 10 million rows, and therefore won't work in Excel. However, each file is in CSV format, and will work in:programming languages such as Python or Rdatabases with SQL.

State highway traffic monitoring (map)

State highway traffic monitoring sites

State highway daily-updated traffic count (API and CSV)

You can also access a zipped csv file version of this

dataset.TMS

(traffic monitoring system) daily-updated traffic counts CSVData reuse caveats: as per license.

Data quality

statement: please read the accompanying user manual, explaining:

how

 this data is collected identification 

 of count stations traffic 

 monitoring technology monitoring 

 hierarchy and conventions typical 

 survey specification data 

 calculation TMS 

 operation. 

Traffic

monitoring for state highways: user manual

[PDF 465 KB]

The data is at daily granularity. However, the actual update

frequency of the data depends on the contract the site falls within. For telemetry

sites it's once a week on a Wednesday. Some regional sites are fortnightly, and

some monthly or quarterly. Some are only 4 weeks a year, with timing depending

on contractors’ programme of work.

Data quality caveats: you must use this data in

conjunction with the user manual and the following caveats.

The

 road sensors used in data collection are subject to both technical errors and 

 environmental interference.Data 

 is compiled from a variety of sources. Accuracy may vary and the data 

 should only be used as a guide.As 

 not all road sections are monitored, a direct calculation of Vehicle 

 Kilometres Travelled (VKT) for a region is not possible.Data 

 is sourced from Waka Kotahi New Zealand Transport Agency TMS data.For 

 sites that use dual loops classification is by length. Vehicles with a length of less than 5.5m are 

 classed as light vehicles. Vehicles over 11m long are classed as heavy 

 vehicles. Vehicles between 5.5 and 11m are split 50:50 into light and 

 heavy.In September 2022, the National Telemetry contract was handed to a new

contractor. During the handover process, due to some missing documents and aged technology, 40 of the 96 national telemetry traffic count sites went offline. Current contractor has continued to upload data from all active sites and have gradually worked to bring most offline sites back online. Please note and account for possible gaps in data from National Telemetry Sites.

The NZTA Vehicle

Classification Relationships diagram below shows the length classification (typically dual loops) and axle classification (typically pneumatic tube counts),

and how these map to the Monetised benefits and costs manual, table A37,

page 254.

Monetised benefits and costs manual [PDF 9 MB]

For the full TMS

classification schema see Appendix A of the traffic counting manual vehicle

classification scheme (NZTA 2011), below.

Traffic monitoring for state highways: user manual [PDF 465 KB]

State highway traffic monitoring (map)

State highway traffic monitoring sites

TMS

(traffic monitoring system) traffic – historic quarter hourly

50MAX is a new generation of truck that allows for safe and more efficient transport of freight goods. This layer represents local road road restrictions where 50MAX trucks are not permitted to travel on. Please note that if an RCA is not part of the 50MAX, truck operators must obtain permit from the RCA to travel in local roads. The local road road restrictions are part of the 50MAX permitting programme from NZTA, implemented in 2013 in order to replace a laborious and time consuming permitting process. As part of the 50MAX permitting programme truck operators requested to inform themselves of where they can and cannot drive. Data was collected by NZTA regional champions through a co-operation with the Road Controlling Authorities. The participation is voluntary. The data for local road road restrictions was provided by the RCAs. More information can be found here: http://www.nzta.govt.nz/vehicle/your/50max/index.html?r=1 Data is updated every calendar month. This data has been digitized based off of the LINZ road centreline.