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LECTURE#10 AIR POLLUTION SURVEY
AIR POLLUTION SURVEY Air pollution consists of gaseous or particulate compounds released into the air by human activities that have detrimental effects on people, nature or certain materials. Transport is one of the main sources of most of these air pollutants, especially motor vehicles in urban areas, as the substances concerned are released directly into the air that people breathe. The principal urban air pollutants are sulphur dioxide, the oxides of nitrogen, carbon monoxide, hydrocarbons and various airborne particles.
Cont. . Increased in motor transport has substantially outstripped capacities of the road network resulting in traffic congestion. In return, congested traffic conditions generate considerably more vehicle pollution than free flow conditions and there is, therefore, the urgent need to introduce transport policies with a particular emphasis upon ü Fostering public transport modes ü Managing the demand for private transport modes.
Cont. . Concerns on clean air quality are not new ones, but no more urgent demanding than the present. Because of the increasing rate of ownership, and relatively higher contribution rate of automobiles to urban air pollution, attention should be given to figure out how transport measures might help improve air quality sustainability. It requires comprehensive decision making that takes into account indirect and interrelated impacts.
“SUSTAINABLE TRANSPORT” The following notion of “sustainable transport” planning envisions us “what and how we have to deal with transport-environment simultaneously”: Sustainable transportation can be described as ü Moving people and goods in cleaner, greener, healthier, safer, more equitable ways ü Where appropriate, not moving people and goods.
Cont. . The massive economic and demographic transformation has changed the urban environment, and results in worsening air quality. At intersections, and other disturbance points in the traffic flow, the driving patterns give substantial additional amounts of emitted exhaust pollution. It is therefore necessary to pay attention to the infrastructural design aspects, when looking for ways of reducing the traffic related emissions to the ambient air.
OBJECTIVES OF AIR POLLUTION SURVEY It enables to: ü Identify the different sources of air pollution ü Evaluate knowledge of air pollution concepts in the community ü Brainstorm ways of reducing air pollution ü Instruct community in reduction of air pollution.