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What is Trafficmaster data?

Trafficmaster is a division of Teletrac, one of the largest fleet companies in the UK and USA.

The data is GPS sourced and centrally purchased by the Department for Transport and contains millions of GPS links broken down into 15 minute segments throughout the day. Trafficmaster data is made up of a mixture of vehicles with over 135,000 polled every 1 to 10 seconds giving an extremely accurate dataset.

As Trafficmaster data is so detailed, we have built two products to help access and analyse this important dataset.

TM Speeds –  a new speed dataset produced using Trafficmaster’s raw GPS speed data which provides bi-directional speeds for 6 key time slots;

  • Peak AM 07:00-09:00 – Mon-Fri
  • Peak PM 16:00-19:00 – Mon-Fri
  • Off Peak 10:00-16:00 – Mon-Fri
  • Evening 19:00-23:00 – everyday
  • Night Time 00:00- 04:00 – everyday
  • Weekend 07:00-19:00 – Saturday-Sunday

Highways Analyst – is a quick, easy and cost effective solution to manage Trafficmaster data which saved Mersey Travel over 112 hours work. Accessing Trafficmaster data through Highways Analyst gives detailed analysis of congestion by using the GPS captures to work out the speed of the traffic on different days and times.

Once the data has been polled the next stage is to attach this to Ordnance surveys ITN road links using a clever routing algorithm that works out the full journey of the GPS device, also taking into account the additional road routing information that comes with ITN.

After this has been processed it is then sent centrally to the Department for Transport who then further queries and splits the dataset into 15 minute segments and into various local authority boundaries in England.

This is then distributed via FTP as large CSV files which contain the traverse time across the link and a lookup between the CSV link ID and the ITN link. This also contains bi-directional link speeds which have an A or B appended at the end of the link, this helps to determine the direction of travel.

This data is updated every month, with changes to the ITN network being taken into consideration, along with additional probes that are added to the Trafficmaster fleet making this an extremely accurate and valuable dataset.