Modelling the direct impact of tram operations on traffic

Duy Q. Nguyen-Phuoc, Graham Currie, William Young, Chris De Gruyter

Research output: Chapter in Book/Report/Conference proceedingConference PaperResearchpeer-review


This paper makes aggregate estimates of the negative impacts of the tram (street-car) network in Melbourne, Australia on vehicular traffic and congestion. These impacts are assessed by comparing the travel demand in two scenarios “without tram” and “with tram”. To investigate the effect of on-street running, a new method was developed which incorporates results from micro-simulation of a link with a non-exclusive tram right-of-way into a conventional four step model to make an aggregate estimate of impacts on all traffic. The effect of semi-exclusive tram rights-of-way is also assessed by considering the reallocation of tram lanes from traffic lanes which reduces road capacity. Overall, Melbourne’s tram network results in an average increase in travel time of 20.5% for vehicle traffic in areas with tram operations. On average, a tramway acts to reduce the volume of vehicles on links by 19.6 %. The aggregate impact of Melbourne’s tram network on traffic in areas with tram operations is an increase in average travel time from 2.06 to 2.16 minutes/km (an increase of around 4.6%). This is associated with an increase of 14.7% in the numbers of severely congested road links.
Original languageEnglish
Title of host publicationProceedings of the 23rd World Congress on Intelligent Transport Systems
EditorsEdward Chung, Brian Smith
Place of PublicationMelbourne Vic Australia
PublisherIntelligent Transport Systems Australia
Number of pages12
Publication statusPublished - 2016
EventWorld Congress on Intelligent Transport Systems 2016 - Melbourne Convention and Exhibition Centre, Melbourne, Australia
Duration: 10 Oct 201614 Oct 2016
Conference number: 23rd (Conference Program)


ConferenceWorld Congress on Intelligent Transport Systems 2016
Abbreviated titleITS 2016
Internet address


  • Traffic congestion
  • Street-car
  • Tram

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