Abstract The transport sector has attracted much attention as one of the main sources of carbon emissions. In this study, we constructed an optimal urban traffic structure model based on the concept of carbon emission satisfaction in order to estimate the absolute carbon emission reductions that can be achieved, and to objectively analyze the relative difficulty of achieving the emissions reduction goal. By considering Shanghai as an example, we found that rail transit is the dominant mode of transportation and that the proportion of travel in private cars can be greatly reduced, but buses should be maintained at the current level, whereas the proportion of taxis may be reduced slightly. In the existing traffic environment in Shanghai, after optimizing the urban traffic structure, we found that 47.62% of the carbon emissions reduction target can be achieved. However, given the excessive attention paid to the satisfaction of individuals and the government but the lack of consideration of the ecological environment, the carbon emission satisfaction with respect to urban traffic is low at present in Shanghai. Improving the carbon emission satisfaction by reducing the satisfaction of other targets is difficult, and the potential for reducing carbon emissions is limited for transportation. Therefore, Shanghai can only achieve its carbon emission reduction targets by implementing resource allocation, transportation technology, and urban planning measures in order to improve the existing traffic conditions, thereby achieving the goal of reducing carbon emissions but without affecting the satisfaction of other targets.

中文翻译：

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基于碳排放满意度的城市交通碳减排潜力：以上海为例

摘要 交通运输部门作为碳排放的主要来源之一备受关注。本研究基于碳排放满意度的概念构建最优城市交通结构模型，以估算可实现的绝对碳减排量，客观分析实现减排目标的相对难度。以上海为例，我们发现轨道交通是主要的交通方式，私家车出行的比例可以大大降低，但公交车应该保持目前的水平，而出租车的比例可能会降低轻微地。在上海现有的交通环境中，优化城市交通结构后发现，47. 可以实现62%的碳减排目标。然而，由于过分关注个人和政府的满意度，而缺乏对生态环境的考虑，目前上海城市交通碳排放满意度较低。通过降低其他目标的满意度来提高碳排放满意度是困难的，而且交通运输减少碳排放的潜力有限。因此，上海只能通过实施资源配置、交通技术和城市规划措施，改善现有交通状况，实现碳减排目标，在不影响其他目标实现的前提下，实现碳减排目标。由于过分关注个人和政府的满意度，而缺乏对生态环境的考虑，目前上海城市交通碳排放满意度较低。通过降低其他目标的满意度来提高碳排放满意度是困难的，而且交通运输减少碳排放的潜力有限。因此，上海只能通过实施资源配置、交通技术和城市规划措施，改善现有交通状况，实现碳减排目标，在不影响其他目标实现的前提下，实现碳减排目标。由于过分关注个人和政府的满意度，而缺乏对生态环境的考虑，目前上海城市交通碳排放满意度较低。通过降低其他目标的满意度来提高碳排放满意度是困难的，而且交通运输减少碳排放的潜力有限。因此，上海只能通过实施资源配置、交通技术和城市规划措施，改善现有交通状况，实现碳减排目标，在不影响其他目标实现的前提下，实现碳减排目标。