Sustainable Transport
Transport is one of the foundations of modern societies and economies. It connects people to opportunities, links rural areas with cities, facilitates trade across borders, and enables cultural exchange between nations. Yet, while transport is vital for development, it has also become one of the leading contributors to energy consumption, air pollution, and greenhouse gas emissions. This dual role makes transport both a challenge and an opportunity in the journey toward sustainable development. The concept of sustainable transport aims to ensure that mobility systems are safe, affordable, energy-efficient, and environmentally friendly while supporting economic growth and social inclusion.
The role of transport in sustainable development was formally recognized during the 1992 United Nations Earth Summit, which resulted in Agenda 21. The document identified transportation as a critical issue due to its impact on energy demand, environmental quality, and human settlements. By the 1997 UN General Assembly Special Session, it was already noted that transportation was becoming the largest end-user of energy in developed countries and the fastest growing in developing countries. The warning proved accurate, as transport today accounts for nearly a quarter of energy-related global greenhouse gas emissions.
The momentum continued at the 2002 World Summit on Sustainable Development, where the Johannesburg Plan of Implementation (JPOI) placed transport at the center of sustainable development policies. The plan emphasized the need for integrated approaches in designing transport systems that included infrastructure planning, public transit, goods delivery networks, and rural access. It also linked transport to broader issues such as urban air quality, road safety, energy efficiency, and climate change mitigation. By identifying transport as both an enabler and a challenge for sustainability, the JPOI laid the foundation for global efforts to reform mobility systems.
The recognition of transport’s central role was further reinforced at the 2012 Rio+20 Conference. In its outcome document The Future We Want, Member States highlighted that sustainable transport can enhance economic growth, improve accessibility, and strengthen the resilience of cities and rural areas. They emphasized that efficient, affordable, and environmentally sound transport systems contribute not only to economic integration but also to social equity, health, and environmental protection. This broad vision recognized that mobility is not just about moving people and goods but about creating inclusive societies where opportunities are accessible to all.
At the institutional level, global action on sustainable transport accelerated when the UN Secretary-General established the High-Level Advisory Group on Sustainable Transport (HLAG-ST) in 2014. This group brought together leaders from across all modes of transport—road, rail, aviation, marine, and public transit—to create actionable recommendations. Their work culminated in the landmark report “Mobilizing Sustainable Transport for Development”, launched at the first Global Sustainable Transport Conference in 2016. The report highlighted the urgent need to transition to cleaner, safer, and more inclusive transport systems and underscored transport’s role in achieving the 2030 Agenda for Sustainable Development.
Sustainable transport is not only about addressing global environmental concerns but also about meeting the special needs of countries in unique situations. Frameworks such as the Istanbul Programme of Action for Least Developed Countries (LDCs), the Vienna Programme of Action for Landlocked Developing Countries (LLDCs), and the SAMOA Pathway for Small Island Developing States (SIDS) recognize the critical role of transport in improving connectivity, trade, and resilience. For these countries, efficient and affordable transport systems are lifelines that connect them to global markets and ensure the delivery of essential goods and services.
The Sendai Framework for Disaster Risk Reduction and the New Urban Agenda also stress the importance of building resilient transport infrastructure that can withstand climate impacts and natural disasters. In many developing regions, poor transport systems limit access to healthcare, education, and employment, exacerbating poverty and inequality. By investing in sustainable and resilient transport, governments can foster economic growth while protecting communities from environmental and social risks.
The integration of transport into the Sustainable Development Goals (SDGs) highlights its cross-cutting importance. Goal 11 on Sustainable Cities and Communities, particularly Target 11.2, calls for access to safe, affordable, accessible, and sustainable transport systems for all by 2030, with a focus on the needs of women, children, older persons, and people with disabilities. This target reflects the idea that transport is a matter of equity and inclusion, not just efficiency. Meanwhile, Goal 3 on Good Health and Well-being, specifically Target 3.6, aims to halve global deaths and injuries from road traffic accidents by 2020. Road safety is a vital component of sustainable transport since unsafe roads disproportionately affect vulnerable populations in developing countries.
Transport also plays a major role in climate action under the Paris Agreement. As the sector accounts for nearly a quarter of global energy-related CO₂ emissions, reducing its footprint is essential for limiting global warming. Strategies include shifting to cleaner fuels, promoting electric mobility, investing in mass transit, and encouraging non-motorized transport like walking and cycling. Sustainable transport systems not only reduce emissions but also improve urban air quality, leading to better health outcomes.
The international community has recognized that building sustainable transport systems requires significant investment, innovation, and cooperation. This includes expanding public transport networks, promoting multi-modal transport systems, integrating renewable energy into mobility, and ensuring that transport policies address the needs of both urban and rural populations. A sustainable transport system also emphasizes affordability, ensuring that low-income groups are not excluded from mobility opportunities.
Looking ahead, sustainable transport is more than just a technical challenge—it is a transformative pathway for achieving sustainable development. By making transport safe, clean, and accessible, societies can unlock economic growth, protect the environment, and promote equity. As cities continue to expand and global demand for mobility rises, the choices made today will shape the quality of life, environmental health, and economic resilience of generations to come. Sustainable transport is not merely a sectoral issue but a cornerstone of sustainable development itself.