| Title | Integrating the Applications of Sustainable Transportation Planning Model and Models for Projecting Energy Consumption and Air Pollutants Emissions |
| Dept | Transportation Planning and Land Transport Division |
| Year | 2010 |
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| Summary | Global climatic change calls for effectiveprograms for reducing emissions of greenhouse gases (GHG) from all countries worldwide. For effective and efficient implementation, environmental considerations should be incorporated at the planning stage. In the past, the Institute of Transportation (IOT) has made considerable efforts in building travel demand forecasting models for evaluating transportation projects in economic terms. The integration of environmental considerations, such as fuel consumption and GHG emissions, however, requires more research efforts. This study continues the efforts (2227-2008) of the project entitled ‘A study on the relation analysis between energy consumption, emissions and transportation planning’. The objective of this study is to build an integrated model of fuel consumption, and GHG emissions and travel behavior to enhance the functional capabilities of a traditional travel demand model. The target is to establish a comprehensive mechanism for evaluating the environmental impacts in the process of highway planning, so that the policy goals of sustainable transportation, including efficient fuel usage and reduction of GHG emissions, may be achieved. The study made the following contributions: The project team made use of the new technology of On-board Emissions Measurement Systems to investigate real-world vehicular emissions of greenhouse gases when operating on various classes of highways. The project team built an emissions model that is applicable to Taiwan’s traffic operating environment. The project team successfully integrated the emissions model with transportation demand forecasting model by building relationships between fuel consumption and vehicular speeds by highway classes. The model may be applied for evaluating transportation policies in their effects on energy consumption and GHG emissions. The second-by-second emission rates from the model may also be applied to traffic simulation model for estimating the emissions effects of ITS improvements. |
| Post date | 2010/10/14 |
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