Each day we live our lives through a progression of journeys. Whether by car, bus, train, ferry, cycle or on foot, our journeys begin and are realised on an intricate network of road, rail or paths linking departure to arrival.

TDG is New Zealand’s largest specialist transportation engineering consultancy offering a full range of professional services in transportation: engineering, planning, modelling, analysis and design. With offices throughout the country, our work spans large and small developments, in both the private and public sectors. Wherever people and transportation meet, that's where we are. Making that meeting point better, is what we do.

Featured Projects


In March 2010 the Tauranga office was involved in a project for Seeka Kiwifruit which presented challenges in terms of assessing expected traffic generation. It soon became apparent that there was a need to focus on a sustainable approach, in short attempting to get more out of the existing network: Seeka... Read more »


Dunedin, Napier and Rotorua City Councils. Traffic signals (lights) affect our day to day travels. Signals are considered to be a good form of intersection control, particularly in denser, busier urban networks. The majority of the traffic signals across New Zealand are managed by a system called SCATS (Sydney Coordinated Adaptive... Read more »

    Latest News

  • Journeys Summer2014 282x376px
    Journeys - Summer 2014
  • 24/03/2014 » In this edition of Journeys we follow up on several projects featured in previous issues. TDG’s collaborative skills are to the fore in a number of affordable housing developments aimed at cooling Auckland’s overheated housing market. » Read more »

  • Michael Hall
    new Graduate for TDG
  • 02/12/2013 » We are pleased to welcome Michael Hall to the TDG Auckland team. » Read more »

  • Img0046a.
    new Associate for TDG
  • 19/11/2013 » Kirit Makwana has recently joined as an Associate in the Lower Hutt office of TDG. He has 14 years experience specialising in the fields of Transport Planning, Traffic Engineering and Highway Infrastructure Design working with both public and private sector clients in the UK. » Read more »