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Aims: Urban spatial planning may be defined as the spatial planning in the geographical location of the city, based on the approach of providing the needs of inhabitants within the geographic spaces, following the recreation of the roles and functions of urban elements. By planning identity signs in urban spaces, it is meant to make the safety and security of the city sustainable. By identifying the emotional, psychological, and educational needs of citizens, visual discipline is created; by planning the identity signs of city’s index and planning the signs, vitality is created for citizens; and in completion, with city architecture, facade and urban landscape will be managed in such a way that the citizens' mental and objective needs are met. Given the role of signs in the city, the question of this study is in what situations, will signs meet the need for security and self-awareness of the inhabitants? In what situations, are vitality and beauty transmitted to the citizens and affect the city's atmosphere? Applying a descriptive-analytical method and using library studies as well as available documents, this study examined the planning of urban signs to achieve the main function of the sign.
Conclusion: Signs in urban spaces with appropriate planning can have positive effects and meet citizens' needs for self-awareness, security, education, etc. In this regard, convergence should be created among decision makers, urban managers, and culture, community, economics, politics, and geography of the urban space of citizens.

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The contemporary globalization which is based on Post-Fordist Economy, was formed on the basis of informational capitalism, and has been differentiated from other concepts due to some characteristics like information economy, global economy, and network economic activities.     The characteristics of post-Fordist Economy create a situation where capitals and productions are changed from place-based to spatial flexibility. In these circumstances, cities play the role of spatial support in social network and inside the post-Fordist Economy as new actors of transnational spaces. Metropolises are trying to provide parts of their expenses from the contemporary globalizing situation by using city diplomacy. Today, managements of metropolises are eager to be linked to world cities, not only to earn their management expenses, but also to create job opportunities for their citizens. And, this becomes evident through the city diplomacy. As such, it can be said that new actors of political geography in the 21^st century cities, the, are looking for their financial benefits. The current research deals questions such as: what are the contexts and how cities enter the transnational spaces as new players in the international system? Here, a descriptive - analytical research methodology has been applied. Finally, the paper considers the theory of Peter Taylor, a famous political geographers who theorized globalization, world cities network, the entrance and performance of metropolises in transnational spaces; for instance, new players in the framework of conceptual model.