Summary of IOT Publications
|Title||Maintaining and Expanding Decision Support System of Greenhouse Gas Emissions in Transportation Sector|
|Dept||Interdisciplinary Research Division|
In support of the Ministry of Transportation and Communications, R.O.C. (Taiwan) (MOTC) and in cooperation with the Environmental Protection Administration, Executive Yuan, R.O.C. (Taiwan), transportation sector greenhouse emission control action plan related work and estimations on energy consumption and greenhouses emissions by different modes of transportation in the transportation sector were conducted through this plan. The “transportation sector greenhouse emission and carbon reduction strategy evaluation information platform” continue to be maintained. Meanwhile, carbon reduction calculation tools have been added to assist the MOTC in evaluating the effectiveness of carbon dioxide reduction through the transportation sector’s greenhouse gas emission reduction strategies.
According to the estimates in this plan, the total greenhouse gas emissions of the overall transportation sector in 2018 was about 37.106 million metric tons of carbon dioxide equivalent, with the road transportation system accounting for the highest (95.6%), followed by rail transportation (2.2%); the total energy consumption of the overall transportation sector was about 13.605 million kiloliters of oil equivalent, also with the road transportation system accounting for the highest (95.5%), followed by rail transportation (2.4%).
In this study, personal Taipei-Hualien trips were adopted as cases for evaluating the pros and cons of different transportation options. In view of the overall Taipei Train Station-Hualian Train Station cases, taking Taiwan Railway trains the whole journey accounted for the lowest carbon dioxide emissions. Under the circumstance that the passenger car only carried one person (the driver), the carbon dioxide emissions far exceeded emissions by the other three modes of land public transportation. It is suggested that pedestrians prioritize public transportation. If the need for a passenger car arises, it is suggested that the mode of high-occupancy shared rides be adopted.
In addition, the “transportation energy saving and carbon reduction strategy evaluation model” developed in the early phase was adopted in this plan. Using a target-oriented method, case and situation analysis was carried out. With “Taipei-Yilan-Hualian passenger car trips reduced by 20%” as the example, the effectiveness of energy saving and carbon reduction by directing passenger car trips to public transportation (including Taiwan Railway and freeway buses) was explored. Results show that if 20% of passenger car trips are directed to Taiwan Railway trains, the average daily energy saved can reach 34,920 liters of oil equivalent, while carbon dioxide emissions can decrease by 95,359 kg; if 20% of passenger car trips are directed to freeway buses, the average daily energy saved can reach 18,861 liters of oil equivalent, while carbon dioxide emissions can decrease by 42,368 metric tons