“If you cannot measure it, you cannot improve it!”

This famous quote by Lord Kelvin (1824–1907) reflects the central principle for achieving sustainable mobility, and subsequently, the SDGs and the Paris Agreement. However, in most low- and middle-income countries, transport data is difficult to access (due to fragmented databases), the quality of the data is poor, or the data is not even collected at all. This is why international development organisations, alongside their partner governments, regularly need to commission experts and consultants to collect transport and emissions data. These great minds do a wonderful job of publishing studies and informing governments and policymakers.

In many countries, statistical systems are not yet fully developed. As a result, most international organisations collect data for the specific objective and sub-sector together with their partner governments, resulting in a variety of indicators. In addition, information is usually published in PDFs and uploaded to different websites, or sometimes not made publicly available. This makes it difficult to cross-check data and compile consistent time series. Extensive resources are spent on extracting, adjusting, checking and using data, and sometimes efforts are duplicated. Finally, the results are published again in PDFs. A common, shared and frequently updated database for the transport sector is not publicly available—yet.

International development organisations, governments, cities, research and data managers and civil society would benefit from data that is accessible and regularly updated and verified. It is important that it is openly available and accessible. There should be a mutually beneficial exchange of information between those collecting and providing data. Our vision is to develop a common data platform where all participating organisations can both contribute and extract transport and emissions data for modelling greenhouse gas emissions and other impacts. Such a 'transport data commons' would create a shared value that the participating organisations could not achieve on their own. In the medium term, it would save money, reduce data gaps and improve the quality of modelling, evaluation, impact assessment and reporting of transport projects.

To start the conversation, GIZ used funds from a German government-funded project on transport MRV to host a co-creation workshop on the sidelines of the ITF Summit in May 2022. A diverse group of 25 people from 21 international organisations and initiatives, as well as representatives from civil society, attended the workshop and, using the design thinking methodology, created a shared vision for a Transport Data Community Initiative (TDCI). Building on this momentum, we then defined a course of action (see our FAQs). Since May 2022, the initiative has grown and welcomed additional partners (see Partners). Three working groups have been established, covering strategy, data architecture and user perspectives. The group coordinates its activities through regular virtual meetings of the full group.