A comprehensive transportation lan fopr the city of Riyadh has been developed and acknowledged as a historic opportunity to improve the existing road infrastructure and provide a 21st Century integrated public transportation system. The success of the planned METRO system not only requires acknowledging the importance of a high quality public transportation system but also the provision of quality public realm or streetscape in which the METRO system will operate. AS+P Albert Speer + Partner GmbH were commissioned by the Arriyadh Development Authority (ADA), with developing and producing an Urban Design & Streetscape Manual (UDM) to provide the chosen design & build consortia with clear guidance to achieve the following goals: - A clear and robust set of design proposals and exemplars to enable the completion and enhancement of existing 30 % designs for the METRO corridors in question. - A design matrix or »toolbox« approach which can be selectively applied through analysis and design, to the various existing street types and land uses. - A design rationale which is simple yet sophisticated and flexible enough to ensure quality and ease of implementation.