Photo by Ryoji Iwata via Unsplash

Achieving a sustainable, low-carbon transport system demands a comprehensive approach: avoiding unnecessary trips, shifting travel to more sustainable modes, improving transport technology and increasing access to jobs and opportunities.

Viewed in the context of this Avoid-Shift-Improve framework, most policies to date have prioritized improve” over “avoid” and “shift” solutions. 

Rethinking the way we get around allows us to shift to lower-emitting modes while improving quality of life.

Focusing on land use and mobility planning, public transport, cycling and walking can offer simple solutions to combat urban congestion and air pollution. Public transport, including so-called “informal transport,” is especially critical in urban areas, where it can be the most accessible, efficient and safest means of transportation. In many cities and in disconnected areas, residents who do not have convenient transportation may be either underserved or trapped into extraordinarily long commutes that hinder access to opportunities, medical care and other necessary services.

Many barriers have prevented the widespread adoption of active options like cycling: the limited availability of protected bike lanes, unfavorable weather conditions, topographical challenges, social perceptions associated with biking, and the perceived risk that local businesses will suffer if car access is diminished or denied. If cities and urban centers can overcome these impediments, they could propel a transition to a low-carbon future.

Active mobility (cycling or walking) and micromobility (shared bikes, e-bikes and scooters) could eliminate as much as 50-70% of short car trips (0-5 kilometers). But making roads safe and convenient for cyclists and pedestrians will be an essential first step. Copenhagen and Bogotá have demonstrated that, despite challenges such as long winters or mountains, well-planned biking infrastructure increases daily bike use and can create a vibrant cycling culture.

Tracking progress on global outcomes

Key enablers and barriers to change

Other shift Other shifts needed to transform the system

Guarantee reliable access to safe and modern mobility

All people deserve access to safe transport and mobility options. The transition of the world’s energy systems to decarbonized travel modes must be accomplished equitably in a way that provides opportunity for everyone.

Reduce avoidable vehicle and air travel

The most cost-effective means of reducing transport emissions is to avoid the need for motorized travel, utilizing city planning to bring opportunities closer to residents and encouraging less carbon-intensive modes of movement, such as public transport, walking and cycling.

Transition to zero-carbon cars, trucks and buses

Global greenhouse gas emissions from passenger cars, trucks and buses made up almost three-quarters of total transport emissions in 2020, underscoring the importance of a rapid transition away from fossil-fuel-powered vehicles.

Transition to zero-carbon shipping and aviation

Although both shipping and aviation are seen as “hard-to-decarbonize,” both sectors have pathways to a greener future. Decarbonizing shipping and aviation will require a combination of technological solutions, such as zero-emission fuels and batteries, alongside operational and efficiency improvements.