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This report explores how to establish important priorities in traffic management. It is neither a toolkit nor a quick fix; rather, it focuses on realistic options for traffic management policies and measures that can be used by local transport officials, international and national transport agencies, universities, and local entrepreneurs. Each theme explored in this report provides a roadmap and guidelines for traffic authorities to follow. The implementation of a Functional Road Hierarchy (FRH), for example, is animportant factor for determining the predominant function of a road within mixed functions, and achieving safe, efficient road use.This report also presents five separate and complementary themes that provide African policymakers with tools to develop a strongerinstitutional foundation for sustainable, safe, and affordable urban traffic management in Sub-Saharan African cities. Known as the "EASI" (Enable, Avoid, Shift, Improve) Framework, these themes emphasize a more people-centric approach to adopting non-motorized modes of transport and addressing parking challenges, while embracing Intelligent Transport Systems (ITS) and technology to improve safety and efficiency across the board. See a comprehensive outline of the EASI principles below. The five themes are influenced by successful outcomes in European, South American, and Asian cities. These cities evolved in similar circumstances to Sub-Saharan African cities and crafted their own roadmaps to traffic management success. Moreover, these themes are entirely consistent with the United Nations Sustainable Development Goal 11: "Making cities and human settlements inclusive, safe, resilient and sustainable." The proposals also build on some measures that are currently evolving in a few Sub-Saharan African cities.

City traffic. --- Traffic engineering. --- Cities and towns

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In recent years, researchers have demonstrated that digital footprints from mobile phones can be exploited to generate data that are useful for transport planning, disaster response, and other development activities'thanks mainly to the high penetration rate of mobile phones even in low-income regions. Most recently, in the effort to mitigate the spread of COVID-19, these data can be used and explored to track mobility patterns and monitor the results of lockdown measures. However, as rightly noted by other scholars, most of the work has been limited to proofs of concept or academic work: it is hard to point to any real-world use cases. In contrast, this paper uses mobile data to obtain insight on urban mobility patterns, such as number of trips, average trip length, and relation between poverty, mobility, and areas of Freetown, the capital of Sierra Leone. These data were used in preparation of an urban mobility lending operation. Additionally, the paper describes good practices in the following areas: accessing mobile data from telecom operators, frameworks for generating origin and destination matrices, and validation of results.

Big Data --- CDRS --- Disaster Response --- ICT Economics --- Information and Communication Technologies --- Information Technology --- Mobile Date --- Mobility --- Poverty --- Poverty Reduction --- Resilient Transport --- Transport --- Urban Planning --- Urban Transport

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Roads and water are generally seen as enemies, with water responsible for most of the damage to roads, and roads being a major cause of problems such as erosion, waterlogging, flooding, and dust storms. This tension, however, can be reversed. The concept of Green Roads for Water (also known as "Green Roads" or "roads for water") places roads in the service of water and landscape management and climate resilience without sacrificing or diminishing their transport functions. With global investment in roads of USD 1-USD 2 trillion per year, plus maintenance costs, the widespread adoption of Green Roads approaches can leverage investment at a transformative scale, making road development and maintenance a vital tool for achieving climate resilience, water security, and productive use of natural resources. Green Roads for Water: Guidelines for Road Infrastructure in Support of Water Management and Climate Resilience provides strategies to use roads for beneficial water management tailored to diverse landscapes and climates, including watershed areas, semiarid climates, coastal lowlands, mountainous areas, and floodplains. The underlying premise of Green Roads is therefore quite simple: designing roads to fit their natural and anthropomorphic contexts; minimize externalities; and balance preservation of the road, water resources, landscape, and soil resources will usually cost less than traditional protective resilience approaches and will produce more sustainable overall outcomes.

Climate Change --- Ecosystem --- Green --- Grey Infastructure --- Innovation --- Natural Hazard --- Natural Protection --- Resilient Infrastructure --- Water Supply