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The Carbon Gap in Everyday Mobility: Accessibility Benchmarks and Mobile Phone Evidence

日常モビリティにおけるカーボンギャップ：アクセシビリティベンチマークと携帯電話データのエビデンス (AI 翻訳)

Christian Rudloff, Peter Widhalm, Alexandra Millonig

ACM Transactions on Spatial Algorithms and Systems📚 査読済 / ジャーナル2026-05-12#エネルギー転換Origin: EU
DOI: 10.1145/3813110
原典: https://doi.org/10.1145/3813110

🤖 gxceed AI 要約

日本語

本論文は携帯電話データを用いて、個人モビリティにおける理論的最小炭素排出量と実際の行動のギャップを分析。中密度地域でのオーバーシュートが顕著であり、都市形態に応じた差別化戦略を提案する。

English

This paper uses mobile phone data to analyze the gap between theoretical minimum carbon emissions and actual behavior in personal mobility. It finds overshoot in medium-density zones, highlighting potential for targeted policy interventions. Recommendations are differentiated by urban form.

Unofficial AI-generated summary based on the public title and abstract. Not an official translation.

📝 gxceed 編集解説 — Why this matters

日本のGX文脈において

日本の交通部門はCO2排出の約2割を占め、地域公共交通維持が課題。本手法は日本の都市別政策評価に応用可能で、SSBJや脱炭素ロードマップにおける交通政策の根拠として有用。

In the global GX context

This paper offers a novel methodology combining accessibility benchmarks with mobile phone data to assess carbon gaps. It is globally relevant for designing equitable transport decarbonization policies and can inform urban planning and climate policy.

👥 読者別の含意

🔬研究者:Researchers in transport decarbonization and urban planning can apply the methodology to assess local policy impacts.

🏢実務担当者:Practitioners can use the indicators to prioritize interventions in medium-density zones.

🏛政策担当者:Policymakers can use findings to differentiate strategies by density, avoiding inequality.

📄 Abstract（原文）

Achieving carbon neutrality in personal mobility is dependent on technological improvements as well as considerable behavioural changes to reduce overall travel volumes and distances. However, implementing policies that aim to change behaviours also bear the risk of creating (more) inequalities. This paper proposes a combination of a new accessibility indicator with monitoring by mobile phone data analysis to accelerate and steer carbon reduction in transport. Minimum Mobility Standards (MMS) are a recently introduced accessibility indicator that defines the minimum carbon emissions required at a location to ensure access to essential daily activities. A comparison of these theoretical minimums with actual travel behaviour, as inferred from anonymised mobile phone data (MPD), and an estimation of transport modes and related CO2 emissions, reveals whether local policies should focus on steering behaviour change or improving accessibility to activities to enable change at first. The findings emphasise the potential for targeted policy interventions to further reduce emissions, particularly in medium-density zones where overshoot is most evident. Recommendations are provided for differentiated strategies based on urban form and population density.

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