Scholarlink

<p>Global mobility infrastructure is expected to expand significantly, especially in the Global South, potentially requiring a substantial share of the remaining carbon budget. However, the resource use and carbon emissions associated with the anticipated expansion of roads, railways, and other mobility infrastructure, as well as the potential of mitigation measures, have so far not been explored systematically. Using high-resolution infrastructure and mobility data, we assess seven demand- and four supply-side circular economy and decarbonization measures aiming to mitigate resource use and associated embodied CO<sub>2</sub> emissions. We find that without demand reduction, infrastructure stocks could double or triple by 2060, with cumulative emissions reaching 10 to 20 GtCO<sub>2</sub>. We find that a global shift to rail would increase embodied emissions to 37 GtCO<sub>2</sub> due to carbon-intensive materials. Combining mobility reduction with enhanced recycling and industrial decarbonization can cut emissions by 63% while providing adequate global infrastructure. This would help to offset increases in emissions from public transport infrastructure expansion required to reduce operational emissions.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Material and carbon implications of future mobility infrastructure expansion around the world

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2026年7月18日

查看全文
  • André Baumgart,
  • Gamze Ünlü,
  • Benedikt Grammer,
  • Aneeque Javaid,
  • Florian Maczek,
  • Fridolin Krausmann,
  • Volker Krey,
  • Dominik Wiedenhofer

摘要

Global mobility infrastructure is expected to expand significantly, especially in the Global South, potentially requiring a substantial share of the remaining carbon budget. However, the resource use and carbon emissions associated with the anticipated expansion of roads, railways, and other mobility infrastructure, as well as the potential of mitigation measures, have so far not been explored systematically. Using high-resolution infrastructure and mobility data, we assess seven demand- and four supply-side circular economy and decarbonization measures aiming to mitigate resource use and associated embodied CO2 emissions. We find that without demand reduction, infrastructure stocks could double or triple by 2060, with cumulative emissions reaching 10 to 20 GtCO2. We find that a global shift to rail would increase embodied emissions to 37 GtCO2 due to carbon-intensive materials. Combining mobility reduction with enhanced recycling and industrial decarbonization can cut emissions by 63% while providing adequate global infrastructure. This would help to offset increases in emissions from public transport infrastructure expansion required to reduce operational emissions.