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Street scene in an African town with people walking and riding motorcycles, and a woman carrying goods on her head and a baby on her back.
One-SEI program

Sustainable transport

SEI’s transport research supports a fair, inclusive, and low-emission mobility transition by bridging global insights with local realities. Through interdisciplinary expertise and partnerships worldwide, we co-create actionable solutions for equitable, sustainable transport systems.

Active project

2025–2026

One-SEI program contact

Maria Xylia / maria.xylia@sei.org

The transport sector is one of the fastest-growing sources of greenhouse gas emissions, responsible for 16% of global emissions in 2023. Reaching global climate targets demands a 90% reduction in transport-related CO₂ emissions by 2050. Yet, efforts to decarbonize are constrained by insufficient climate financing, receiving about 26% of it, with only 3% for least developed countries, and 15% to emerging markets excluding China.

Research that moves us: towards just and sustainable transport

At SEI, we believe that sustainable transport must be just, inclusive and resilient. We work at multiple governance scales, from the local to the global, to support a fair and effective transition to low-emission mobility systems that support improved health and wellbeing.

SEI’s transport research draws on a broad, interdisciplinary foundation that integrates insights from transport planning, behavioural science, and emissions modelling with themes such as just transitions, social inclusion, and emerging technologies like e-mobility and biofuels. Our comparative strength lies in delivering human-centred, justice-driven research that links big-picture goals with place-based realities.

Working across all continents, and Europe, our global team collaborates closely with governments, civil society, and communities to co-create actionable knowledge, from planning through to implementation.

We focus on three key thematic research areas:

  1. Equity in transport: access, affordability and Inclusion

Ensure all communities, especially marginalized, low-income and rural, can access affordable, inclusive, sustainable services.

2. Sustainable transport systems: modal shifts and integration

Promote public transport, shared mobility and active modes to reduce private-car dependence.

3. Transport modelling for policy and planning

Develop advanced, climate-resilient transport models and scenario analyses to guide policy and infrastructure decisions.

Features

Perspectives

Case studies: Inclusive Climate Resilient Transport in Africa project

SEI’s Howard Cambridge interviews Daniel Mwamba, Founder and Chairman of Zambia Road Safety Trust. Daniel discusses how different creative methods were used to engage local road users at a major junction in Lusaka, Zambia. He describes their reaction to these approaches and how the City Council also appreciated how they were used in connecting vulnerable people.

The story of a lawyer, one of a series of case studies investigating mobility narratives on road safety and climate change as part of of the Inclusive Climate Resilient Transport Planning in Africa project, funded by the UK Foreign Commonwealth & Development Office (FCDO) High-Volume Transport Applied Research Programme, managed by IMC Worldwide.
Maria Xylia
Maria Xylia

Senior Research Fellow

SEI Headquarters

Gary Haq

Senior Research Fellow

SEI York

Charles Heaps

Senior Scientist

SEI US

Maria Cole
Maria Cole

Senior Communications and Impact Officer

Communications

SEI Headquarters

Romanus Opiyo
Romanus Opiyo

Policy and Engagement Lead

SEI Africa