Comparison of emission factors for road traffic from a tunnel study (Gubrist tunnel,Switzerland) and from emission modeling |
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| Institution: | 1. Institute for Energy Economics and Rational Use of Energy (IER), Universität Stuttgart, Hessbrühlstr. 49a, D-70565 Stuttgart, Germany;2. Institute for Atmospheric Science, ETH-Hönggerberg, CH-8093 Zürich, Switzerland;3. Carbotech AG, Eulerstr. 68, CH-4051 Basel, Switzerland;4. Seminar for Statistics, ETH-Zentrum, CH-8092 Zürich, Switzerland;1. Key Laboratory of Dependable Service Computing in Cyber Physical Society of Ministry of Education, Chongqing University, Chongqing 400044, China;2. College of Automation, Chongqing University, Chongqing 400044, China;1. Faculty of Maritime and Transportation, Ningbo University, Ningbo 315211, China;2. Jiangsu Key Laboratory of Urban, ITS Southeast University, Nanjing 210096, China;3. National Traffic Management Engineering and Technology Research Centre, Ningbo University Sub-centre, Ningbo 315211, China |
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| Abstract: | The emission factors of NOx, 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 NOx 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. |
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