COMMUTER EXPOSURE MODELING METHODOLOGIES
Two methodologies for modeling commuter exposures are proposed: computer-oriented approach and a manual approach. Both modeling methodologies require that major commuter routes, or pathways, be identified and that the traffic on the remainder of the roadway network be treated as background pollutant sources. Since the majority of pathway exposure is expected to result from emissions on the pathway itself, the emissions and dispersion of non-pathway source pollutant are handled in a simple fashion. Pathway traffic undergoes a more sophisticated treatment in that congestion and delay due to signalization are accounted for and emissions are computed accordingly. The methodology used to simulate the dispersion of pathway emissions utilizes three separate dispersion treatments, according to whether the roadway is limited-access, non-limited access, or a street canyon.
SRI International333 Ravenswood Avenue
Menlo Park, CA USA 94025-3493
Environmental Sciences Research LaboratoryResearch Triangle Pk, NC USA 27711
- Simmon, P B
- Patterson, R M
- Publication Date: 1979-2
- Pagination: 168 p.
- TRT Terms: Air pollution; Commuters; Contaminants; Crash exposure; Evaluation; Exhaust gases; Highways; Human beings; Mathematical models; Methodology; Motor vehicles; Networks; Numerical analysis; Pollutants; Roads; Routes; Simulation; Statistics; Traffic; Traffic volume
- Candidate Terms: Road networks
- Uncontrolled Terms: Exposure
- Old TRIS Terms: Dispersion
- Subject Areas: Data and Information Technology; Highways; Operations and Traffic Management; Passenger Transportation; Safety and Human Factors;
- Accession Number: 00192361
- Record Type: Publication
- Source Agency: National Technical Information Service
- Report/Paper Numbers: EPA/600/4-79/010 Final Rpt.
- Contract Numbers: EPA-68-02-2754
- Files: TRIS
- Created Date: Jul 31 1979 12:00AM