This is a Non-Federal dataset covered by different Terms of Use than Data.gov.

Caltrans Average Annual Daily Traffic Volumes (2004)

Metadata Updated: April 9, 2015

[ from http://www.ehib.org/cma/topic.jsp?topic_key=79 ] 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.

Access & Use Information

Non-Federal: This dataset is covered by different Terms of Use than Data.gov. License: No license information was provided.

Downloads & Resources

Dates

Metadata Date August 28, 2009
Metadata Created Date March 14, 2013
Metadata Updated Date April 9, 2015
Reference Date(s) January 1, 2006 (publication)
Frequency Of Update annually

Metadata Source

Harvested from CEHTP Metadata Repository

Additional Metadata

Resource Type Dataset
Metadata Date August 28, 2009
Metadata Created Date March 14, 2013
Metadata Updated Date April 9, 2015
Reference Date(s) January 1, 2006 (publication)
Responsible Party Environmental Health Investigations Branch (California Department of Health Services) (Point of Contact)
Contact Email
Access Constraints Use Constraints: Provided as-is. Read the data development proceedure to see if it fits your purpose. An un-editied version can be requested directly from CalTrans., Access Constraints: DHS Network. Permission from EHIB Tracking prior to accessing server.
Bbox East Long -113.502648
Bbox North Lat 42.068962
Bbox South Lat 32.433164
Bbox West Long -124.499266
Coupled Resource
Frequency Of Update annually
Guid
Harvest Object Id c9993d75-ab92-4841-8787-b4429456ea44
Harvest Source Id d8a7c4e9-17a8-402b-9a3f-7fc39f54c301
Harvest Source Title CEHTP Metadata Repository
Licence
Metadata Language
Metadata Type geospatial
Spatial Data Service Type
Spatial Reference System

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