What is it about?
This paper represents the current situation of GHG emissions from the available modes of transportation and the curtailment of GHG gas emissions in the future due to the implementation of Metrorail service by analyzing the current emissions from conventional bus service in Dhaka city.
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Why is it important?
Dhaka is Bangladesh's capital and most populous city. With an estimated population of 8.9 million people, it is the world's ninth biggest and sixth most densely inhabited metropolis within the metropolis having an area of 302.92 square km. It relies on its transport system based on roads, however Despite the low level of motorization. Carbon dioxide (CO2) emissions from road transportation have received special attention due to their steadily increasing trend. CO2 accounts for over 82 percent of GHG emissions, with the transportation sector contributing a significant amount. Although some industrialized and fast-growing countries have been able to minimize CO2 emissions from the transportation sector through the use of environment-friendly technologies and the execution of regulations and plans, many developing countries like Bangladesh have fallen far behind. The transportation sector accounts for around 54% of overall petroleum product consumption in Bangladesh, which is 2.5 times larger than the agricultural sector and 18 times higher than the industrial sector. It is alarming that there is an increase in fuel consumption which is also an indication of the increase in GHG emission rates. This article examines the potential for the development of mass transit railway systems in the Dhaka metropolitan area, with the goal of reducing GHG emissions. This study only reflects the phenomenon of the area surrounding MRT Line-6. From the study, it has been found that the available transportation modes in the study area emit about 71,330 tons of GHG annually as CO2. On the other hand, the emission of CO2 due to the operation of metro rail is only about 18,688 tons per year. So, if the metro rail is implemented which is electrically operated, then there will be an approximate curtailment of 52,642 tons of GHG from Uttara to Motijheel point.
Perspectives
Writing this article under the supervision of Prof. Dr. Quazi Hamidul Bari sir was a great pleasure for me. Before the construction of the Metrorail, there might be an Environmental Impact Assessment in which the positive impacts of the Metrorail might be discussed. But these data are not reachable for the people in general. I hope this article will help individuals to realize the fact that when Dhaka city will be covered totally by the Metrorail system then it will bring positive changes both in the view of fuel consumption and GHG emission. That is why residents and passengers in the city should heartily welcome the calculative decision of the government of Bangladesh in terms of the Metrorail system.
Dip Mukherjee
Khulna University of Engineering and Technology
Read the Original
This page is a summary of: Curtailment of GHG emission due to implementation of metrorail service: A case study in Dhaka city, January 2023, American Institute of Physics,
DOI: 10.1063/5.0129943.
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