Abstract
The objective of this research is to obtain universal knowledge on relation between urban structure and CO, NOx, PM and CO2 emissions from urban passenger transport. Firstly, we conducted contributing factor analysis on variations of pollutants emissions among world cities. It is shown that variations of emissions are mostly contributed by transport volume for all pollutants. Secondly, we developed transport demand model which explains transport demand using variables including population density andurban area as explanatory variables. Then, we simulated influence of population density change to pollutants emissions by using transport demand model and emission factor model. It is shown that NOx emissionsper urban area increase by 6.2%-25.8% while CO2 emissions per capita decrease 3.1%-11.3% when population density increases by 20%. It is also shown that reduction rate of CO2 emissions per capita is the highest in cites where modal share of passenger car is about 60% in trip base.
