Includes a study which analyzes outdoor air pollution that a person instantly inhales while on the road . With a Backpack containing compact instruments, researchers and volunteers walk along specific routes along and near major roadways. These measurements will be used to estimate the personal exposure of pedestrians to soot and other aerosol particles with varying sizes. soot mass concentrations measured on March 16,2015 at 6:15 pm with the Backpack along Katipunan Avenue and nearby areas. High soot mass concentrations were observed along Katipunan and in some streets on the left, while values decrease inside ADMU campus