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

Johnsonville Town Centre Plan

TDG has worked with DNZ Property Fund since 2006 on road improvements and commercial land-use expansions in Johnsonville Town Centre, Wellington. Johnsonville is the largest and most significant town centre in Wellington outside the central city. The objective for the town centre is to provide a vibrant business environment whilst ensuring... Read more »


The Selwyn Aquatic Centre is one of Canterbury’s newest sporting centres to open following the 2010 and 2011 Canterbury earthquakes. Opened in June 2013, the Aquatic Centre provides an important local amenity to the rapidly expanding population of Rolleston. The Aquatic Centre is the first stage of the town’s wider... Read more »