Comparison of emission factors for road traffic from a tunnel study (Gubrist tunnel, Switzerland) and from emission modeling

The emission factors of NO x , VOC and CO of a road tunnel study performed in September 1993 in the Gubrist tunnel, close to Zürich (Switzerland) are compared with results of emission calculations based on recent results of dynamometric test measurements. The emission calculations are carried out wi...

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Bibliographic Details
Published in:Atmospheric environment (1994) 1999-09, Vol.33 (20), p.3367-3376
Main Authors: John, Christian, Friedrich, Rainer, Staehelin, Johannes, Schläpfer, Kurt, Stahel, Werner A.
Format: Article
Language:English
Subjects:
Applied sciences
Atmospheric pollution
Dynamometric test
Emission factor
Emission model
Exact sciences and technology
Pollution
Pollution sources. Measurement results
Real world emissions
Road traffic tunnel measurement
Switzerland
Transports
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Summary:The emission factors of NO x , VOC and CO of a road tunnel study performed in September 1993 in the Gubrist tunnel, close to Zürich (Switzerland) are compared with results of emission calculations based on recent results of dynamometric test measurements. The emission calculations are carried out with a traffic emission model taking into account the detailed composition of the vehicle fleet in the tunnel, the average speed and the gradient of the road and the special aerodynamics in a tunnel. With the exception of NO x emission factors for heavy duty vehicles no evidence for a discrepancy between the results of the tunnel study and the emission modeling was found. The measured emission factors of individual hydrocarbons of light duty vehicles were in good agreement with the expectations for most components.
ISSN:1352-2310
1873-2844
DOI:10.1016/S1352-2310(98)00377-X