In alignment with global efforts to achieve the climate targets set by the Paris Agreement and mitigate environmental impacts, the urban freight transport (UFT) sector must undergo significant decarbonization to help reduce carbon footprint and consequently curb global temperature rise. Reducing greenhouse gas (GHG) emissions in UFT demands a multifaceted approach, including optimizing logistics and operational efficiency, transitioning to low-carbon and zero-emission transport modes, and adopting advanced fuel-efficient technologies. This chapter presents the Selection, Measurement, Evaluation and Reporting (SMER) method, a important tool for evaluating and tracking the effectiveness of these strategies and developed in the study of Assis (Desenvolvimento de um Método para Selecionar, Medir, Avaliar e Reportar Boas Práticas para promover a Logística Sustentável. Doctoral thesis submitted to the Graduate Program in Transportation Engineering, COPPE, Federal University of Rio de Janeiro, 2022 [11]). The SMER framework enables companies and policymakers to systematically measure and select sustainability initiatives, evaluate progress, transparently report results, and ensure the verification of emission reductions by enhancing the MRV method. Furthermore, it plays a critical role in supporting the implementation and assessment of Nationally Determined Contributions (NDCs) by providing a structured approach to evaluating three key dimensions: GHG emissions quantification, effectiveness of mitigation actions, and tracking of financial, technological, and capacity-building support. By establishing a robust SMER method, the UFT sector can enhance accountability, drive continuous improvement, and accelerate the transition toward a low-carbon economy.