Calculation of private vehicle trips assumes the vehicle travels directly between the origin, ie home, and the final destination, ie the land use activity. In reality, a parking space must be found near to the destination, and then a walking leg undertaken to reach the destination. The walking distance between the parking space and the destination, land use activity, will depend on the particular activity. For example, patient parking is usually provided within close proximity to doctors’ surgeries and therefore the resulting walking leg would be short, whereas parking may not be available directly at all workplaces, and therefore a longer walking leg would be required. Incorporation of this aspect into the modelling accessibility would further refine the results. A possible methodology has been included in an accessibility pilot study undertaken in the Heretaunga area for the NZTA on behalf of Hawke’s Bay Regional Council and in Hamilton city for the Hamilton City Council.