The article discusses how a program called the Clean Development Mechanism (CDM) can help reduce greenhouse gas emissions in developing countries through transport projects. Despite limited success so far, there is a push to expand CDM support for these projects. The researchers argue that even though transport projects may be less cost-effective, they are still important for reducing emissions. The article also looks at the current challenges facing transport projects in accessing CDM funding and provides a case study to show how these projects can better utilize carbon finance support in the future.