The world is facing many environmental and economic problems resulting from rapid urbanization and over-exploitation of available resources as well as due to the dramatic increase of the population and corresponding increases in the number of cities. Technological and industrial development plays a big role in these problems. As a result, the term green technology became as a tool to solve these problems with an orientation towards sustainable development at all levels. , It seems to be very effective tool in modern urban planning which incorporates of all aspects of planning such as infrastructure and industry, energy, telecommunications, transportation and other vital areas in cities. These technologies are environment friendly inventions that often involve -energy efficiency, recycling, safety and health concerns, renewable resources, and more. Green technologies include several forms of technology that help to minimize negative effects on the environment and create new ways to achieve sustainable development. This paper is about green technology and its role in sustainable urban planning, it aims to clarify the most important areas for the application of this technology and the benefits provided by these technologies in improving the lives of the population in cities and a development orientation towards sustainability.

Volume delay functions (VDFs) are mathematical relationships used by the traffic allocation step of demand forecasting models to take into account the effect of increased traffic flow on the time spent to travel each possible route between different travel sources and destinations. The VDF is usually applied in static traffic assignment to describe the resultant link travel times, as a function of flow and capacity and free-flow travel time. This study aims to investigate the interface between the delay functions used by demand forecasting models and the highway capacity manual (HCM) model flow-speed relationships. The most commonly used VDFs in transport demand modeling packages in the literature were identified. The Bureau of Public Roads (BPR), conical functions (CF), Akçik and Troutbeck function (ATF), and delay logistics function (LF) were described. The four VDFs and the current HCM models were calibrated for the Iraqi road environment, and their compatibilities were examined. Results show that the best adjustments were obtained using the BPR function (quadratic error 0–0.012) and LF (quadratic error 0–0.002). The roles of CF and ATF were used with care, as both appear to neglect the delay in the condition of small to medium traffic patterns typical to country roads. Particularly, in response to single-lane roads, the LF has proven to be useful due to its potential to represent significant delays for low traffic flows and simultaneously produce more delays in congestion conditions; furthermore, the effect of flow as well as intersection spacing is obviously nonlinear. As flow reaches 600 pcu/h/lane, running time increases quickly. With more intersections per kilometer, the impact is obviously greater.

The urban management, municipal councils and their local committees, in addition to the laws, and regulations enacting them, play an important role in defining economic, social and environmental scenarios, and directing them towards achieving sustainable development. Sustainability in all its forms. The research seeks to identify the mechanisms and concepts of urban management in general and the management of urban land uses in city centers in particular, and how to use them optimally and achieve the best distribution of their uses in order to be sustainable and achieve sustainable development in the city center by integrating the principles of sustainability in the urban management process to become As a result, we have a vibrant sustainable center. In the theoretical framework, concepts related to the city center, its importance, characteristics, components and limits were presented. The concepts of sustainability and sustainable development were also presented, and what are its objectives, dimensions, standards, and approaches, in addition to defining the sustainable city center and its components and how, and through the theoretical framework, indicators of sustainable urban management were extracted. On the practical side, the researcher used the field surveys of the study area (the old Rusafa Center) in addition to distributing the questionnaire form to the specialists from the planning and executive departments of the study area to show the extent of their agreement and disagreement about the extent of the application of sustainable urban management indicators within the context of the work of the current urban management system. The results of the research showed a shortcoming in the adoption of the principles of sustainability within the context of the work of the current urban management, as the results of the questionnaire showed the non-conformity of most of the indicators that were applied to the current urban management system.

Our cities are far from achieving sustainability. This requires sustainable approaches and strategies when planning urban land use for our cities as the basis for the distribution of activities and services in the city and can be considered as the basis for the sustainability of the city. The mixed use strategy is one of the sustainability strategies. It has been adopted in our research and an equation Lum has been adopted in measuring the sustainability of the study area of the Holy City of Karbala. This equation is a measure of the extent to which uses compete with residential use, which is dominant in residential neighborhoods. This equation suggests five cases of sustainability (very unsustainable, unsustainable, low sustainability, sustainable, very sustainable). The important conclusion are 3% of the neighbourhoods are very unsustainable neighbourhood, 14% of the neighborhoods are unsustainable, 48% of the neighborhoods are Low sustainability, 34% of the neighborhoods are sustainable, 1.5% of the neighbourhoods are very sustainable. The main recommendations are to adopt a mixed use strategy in the future master plans in the planning of residential neighborhoods in the holy city of Karbala to reduce the time, distance and cost of trips by reducing the distance between uses to achieve the principles of sustainability in all its aspects (environmental, economic and social), relying on walking within neighborhoods for residents, reducing air pollution and noise by reducing the use of vehicles within neighborhoods.

The integrated planning of urban land use and transport systems addresses the development of strategies to increase economic efficiency, reduce excessive use of resources, improve social aspects. The research aims to assess the integration of urban land uses with the transportation system in Karbala, which achieves sustainability. Through two world strategies, the first is planning the land uses to achieve the reliance on walking and bicycle use. It was evaluated through the zone of influence of service (Zone of influence we can define :the area that benefits from a specific service with a specified distance), the index adopted by the Ministry of Housing for the year 2018. Second is integration of land uses with public transport, identification of public transport routes, type of media used and identification of residential areas served by the network, to identify areas not serviced by the public transport network. The GIS program was used for these uses and analyzes by buffer zone were conducted for the spatial location of the services and the calculation of their zone of influence of service.