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.

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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


‘iWay’ is the branding name chosen by Hastings District Council (HDC) for the strategies, interventions and community initiatives to support and promote active mode transport choices in Hastings. The iWay project is partly funded by the award received from NZ Transport Agency (NZTA) in 2010 to support Hastings’ aspiration to become... Read more »


A Rising STAR (Site Transport and Access Review) As means of enhancing our range of service to our clients, TDG has developed a range of Site Transport and Access Review (STAR) reports for clients in the Auckland region. The STAR report is a short strategic transport and accessibility report which... Read more »