Estimating residential public transport trip generation rates

Primary Author : Jihyung Kim

Co-authors : Alexa Delbosc and Chris DeGruyter

Organisation: Monash University


Traffic Impact Assessment (TIA) uses vehicle trip generation rates to estimate the impacts of developments on the transport system. Impacts on the public transport system are generally only assessed qualitatively. This paper aims to quantify the impact of residential developments on the public transport system by estimating public transport trip generation rates in Melbourne.


Traffic Impact Assessment (TIA) uses vehicle trip generation rates to quantify the transport impacts of developments. However very little guidance is available on how to estimate the impact of developments on public transport trip generation. This can lead to underestimating the impacts that new developments have on the public transport system.

This paper attempts to fill this gap by estimating residential trip generation rates for public transport in Melbourne. These were derivedusing the 2009 VISTA travel survey (Victorian Integrated Survey of Travel and Activity).

We found that public transport trip generation rates depended on the type of residential development (flat, townhouse or separate house), distance to public transport stop/station and distance to Melbourne CBD. Several case studies were used to illustrate the differences between public transport and private vehicle trip generation rates. Developments in inner Melbourne suburbs that have good access to public transport generate a significant number of public transport trips, comparable to (or even greater than) the trips generated by the private vehicles. The inclusion of public transport trip generation data within TIA guidelines will assist in a much more detailed measurement of the impacts developments may have on the public transport system.