Why Traffic Volumes Are Counted

Auckland Transport traffic flow counting programme is carried out based on road hierarchy and need.

Traffic volumes information assists with road design and in prioritising network improvements. This data is also valuable in assessing road safety risk exposure.

Traffic Count Data

Traffic Counts CSV comprehensive (CSV 1.5MB - faster download time)

Traffic Counts PDF summary (PDF 10.8MB - slower download time)

Traffic Counts Data Explained

The Traffic Counts data is collected for Auckland Transport at sites within the Auckland region. The data dates back to 1990 and previous to 2011 was collected by the legacy councils Auckland City, North Shore City, Manukau City and Waitakere.

Traffic count sites are listed in the spread sheet in alphabetical order by street name.  Each column is explained here:

• City: refers to the legacy council that collected that particular traffic count. The traffic counting programme has now been centralised, so all counts done from 1 November 2010 will have Auckland Transport in the city area.

• Road name: the road the traffic count was done on.

• RP: road position.

• Location: exact location of where it was on the road that the traffic count was done.

• Count started: date when the 7 days count finished. The two lines reflect traffic count (example northbound or southbound for the same road).

• 1-day: most of the counts are done over a 7-day period. Very few sites are counted for 1 day. If 1 day counts are done for a road they will be in this column.

• 5-dat ADT: 5 days Average Daily Traffic from Monday to Friday.

• Sat tot: total traffic for Saturday.

• Sun tot: total traffic for Sunday.

• 7-day average: 7 days average traffic from Monday to Sunday.

• Direction: indicates which side of the road the count was on.

• AM peak: peak hour traffic in the morning.

• PM peak: peak hour traffic in the evening.

• Midday inter peak: peak hour traffic around midday.

Additional columns are made available in the comprehensive CSV file:

• RAMM ID: unique ID Auckland Transport allocate to individual roads.

• Site ref: site reference number in the overall traffic counting programme.

• CW ID: carriageway ID.

• Type: type of counting site.

• HCV%: percentage of heavy commercial vehicles.

• 7-day count both directions class percentage: different vehicle by classification.

• Total%: percentage of different vehicle by classification.  

Traffic Count Data Terms Of Use 

While all due care has been taken in the preparation and provision of this service, Auckland Transport does not give any warranty that the information contained is accurate, and accepts no liability whatsoever for any loss or damage arising from the use of the data. People using the traffic count data should apply and rely upon their own skill and judgement when using the information, and consider the consequences arising from its use. The data should not be used in isolation from other sources of advice and information.

Please note that traffic flow counts are variable due to various external factors, eg sensitivity of equipment, counting methods used, congestion effects and seasonal variations. The traffic flow data is intended to be used as an approximate indication of traffic volumes at counting sites.

Check out real time traffic congestion information on the NZTA website.