middle income category and D2h and D3h respectively represents the middle and rich income groups. Base category is the low income category. Here income dummies are used rather than taking income as a continuous variable in order to understand better the categorical impact of income across income classes on their carbon footprint. Vehicle ownership is explained by the dummy variable D4h. Per capita transport expenditure and number of family members in each household are continuous variables. All the independent variables in Eq. (2) are expected to affect the carbon footprint in a positive way. The R2 value is 0.60 meaning that 60 percent of the variability of CFh can be explained by the independent variables. Among the income dummies used, coefficient for D3h is the maximum at 0.21. This means that when the per capita income of the high income category increases by one unit, per capita carbon footprint increases by 0.21 units, relative to the low income group, all other variables being held constant. Among all other income groups, this is the highest. As expected the coefficients of D1h, D2h and D3h are all positive. But only D2h and D3h are significant. This explains that rising income or affluence do encourage profligate consumption patterns in transport use. As expected, coefficient for vehicle ownership D4h is also positive and significant. It is very natural to expect a positive correlation between vehicle ownership and carbon footprint from transport use. The coef- ficient shows that an increase in vehicle ownership by one unit will increase footprint by 0.12 units. Coefficient for number of family members in the household is positive but insignificant. The coefficient for per capita transport expenditure is posi- tive and highly significant. Hence the model clearly tells us that as per capita income, per capita transport expenditure and vehicle ownership of the households increase, carbon footprint will increase. Generally speaking carbon footprint increases with income, but to be specific, it increases more among the higher income categories.