Adverse impact of particulate matter on health of human being is being studied since long. The research interest is shifting form total particulate matter (PM) to PM10 and to PM2.5 or even finer particles. The source of these particles essentially consists of primary aerosols generated due to anthropogenic activities such as transport, industry, construction and secondary aerosols. In major cities traffic on paved roads is significant contributor to this. Empirical models have been tried to explain the emission of particulate matter from paved road surfaces. Subsequently these models have been criticized and found to be inadequate in explaining the observation. The lack of mechanistic basis is the real flaw of these models. This book therefore provides a process based modelling to explain the paved road particulate matter emissions and gives a new direction in identifying the processes involved in the emission process. An attempt has been made to identify parameters that control these processes.