Foreword
A survey of vehicular pollution in the 12 metropolitan cities of the country was undertaken during the year 1988- 89. The survey was conducted through interaction with Automobile Association, petroleum marketing organisations and through sample surveys among vehicle owners to determine average distance covered by different classes of vehicles. Information was also collected from agencies owning of large fleet of trucks and buses. Methodology adopted in arriving at the vehicular pollutional load was discussed with the Indian Inst.itute of Petroleum, Oehradun and is confirmed to be an accepted one. Appropriate emission factors developed by World Health Organisation are used in this report.

This report is brought out in 13 parts. This document Part Ill, is a report of the assessment of vehicular pollut.ion in the metropolitan city of Bombay. Part I is a summary report of the situation in all the 12 metropolitan cities while Part II to XIII deal with individual metropolitan cities in det.ail.

The valuable help provided organisat.ions during the survey, I believe this report would be useful to the concerned authorities dealing with vehicular pollution control and to all those interested in improvement of environmental quality. by different concerned is gratefully acknowledged. .