Traffic Exhaust Pollutants
Traffic exhaust pollutants include compounds such as carbon monoxide, nitrogen oxides, particulates (fine dust and soot), and toxic air pollutants such as benzene. Ozone also results indirectly from traffic, as nitrogen oxides combine with volatile organic compounds in the presence of sunlight. Traffic exhaust pollutants are a major source of air pollution in California, especially in urban areas, and are a major source of greenhouse gas emissions. Vehicles run on conventional or diesel engines. Although diesel engines are more efficient, they emit more fine particles than convential engines, and according to the California Air Resources Board, diesel exhaust is responsible for 70 percent of the cancer risk that the average Californian faces from breathing toxic air pollutants (see http://www.oehha.ca.gov/public_info/facts/dieselfacts.html). Potential health effects from being exposed to traffic-exhaust pollutants include repiratory illnesses (including asthma), cardiovascular disease, adverse reproductive outcomes, cancer, and shortening of the life span.
EHIB is engaged in a number of activities examining how the health of Californians are affected by traffic-exhaust pollutants. EHIB has completed studies investigating whether children who live near busy roads are at increased risk of asthma exacerbations and leukemia; and have been engaged in developing statistical models of traffic pollutants which will allow us to predict who is being exposed and at what levels. EHIB has also examined issues of environmental justice in terms of what types of populations live near busy roads.
Examining associations between childhood asthma and traffic flow using a geographic information system.
Using geographic information systems (GIS) and routinely collected data, we explored whether childhood residence near busy roads was associated with asthma in a low-income population in San Diego County,...
Hierarchical modeling of spatio-temporally misaligned data: Relating traffic density to pediatric asthma hospitalizations.
Bayes and empirical Bayes methods have proven effective in smoothing crude maps of disease risk, eliminating the instability of estimates in low-population areas while maintaining overall geographic trends...
Residential Exposure to Traffic in California and Childhood Cancer
Background: Motor vehicle emissions are a major source of air pollution in California....
Traffic density in California: socioeconomic and ethnic differences among potentially exposed children
Motor vehicles are the main source of many hazardous air pollutants in California....
Traffic patterns and childhood cancer incidence rates in California
Objective: Some studies have suggested that residential proximity to high traffic areas is associated with increased risk of childhood cancer, although the epidemiologic evidence to date has been mixed....
California Environmental Health Tracking Program (CEHTP)
-- California Environmental Health Tracking Program Improving Public Health With Better Information air quality asthma birth defectsbreast cancer mapping cancer carbon monoxide poisoning climate...
EPA Aging Initiative - indoor air quality evaluation in West Oakland
-- This is a pilot study of a pre-intervention/post-intervention indoor air quality assessment in 10-20 homes of senior citizens residing in a heavy-traffic impacted area of West Oakland, California....
Diesel Engine Exhaust
(623KB) -- Health Hazard Advisory from California Department of Public Health's Occupational Health Branch describes cancer and other health risks, occupations at risk for work-related exposure, legal exposure limits, ways to reduce exposure, resources, and more.
- Paul English