In recent years, the concepts of sustainable development are discussed as the core of spatial planning around the world. Also, achieving these concepts is the ultimate goal in many kinds of planning. As it is known sustainable development will be approached when the same three objectives are realized; environmental protection, social justice and economic development. In today's world, it can be stated, excessive using of motor vehicles, especially in developing countries is one of the most

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... ential factors on the environment. It is depending on type of arrangement and distribution of land uses in the cities. The findings of this paper, as an experimental study are explaining the impact of distribution and diversity of land uses on encouraging residents to use sustainable transportation modes. In this survey two districts of Shiraz metropolitan have been selected with similarity in demographic characteristics and differences in Land-use mix as the case study to compare. Basic data has been collected through 350 household questionnaires. Relationship between land-use mix and travel indicators, including the transportation mode and average trip length, has been done by statistical analysis (analysis of variance and correlation analysis).The results revealed that in areas with high rate of land-use mix the average length of vehicle trips by residents will be decreased. On the other hand, the usage of compatible vehicle with the environment increases. It can be concluded that appropriate policies in land use planning leads us to achieve sustainable transportation. Keywords: land-use mix, trip length, sustainable transportation, compatible means of transport, Shiraz On the other hand, there is an interaction between land use planning and transportation. Land use activities affect transportation conditions, and transport planning impact on land use development. Land use pattern has a significant influence on accessibility, the way different uses distribute in the city and neighborhoods directly affect the decision, purpose of trips and type of travel pattern (Limnond & Nimeier, 2004; Litman, 2013) . While sustainable transport refers to the broad subject of transport that includes vehicles, energy, infrastructure, roads, railways, airways, waterways, canals, pipelines, and terminals. Also, it is largely being measured by transportation system effectiveness, efficiency, and environmental impacts of the system (Amekudzi, 2005) . But in this paper, focus is on the vehicle aspect. So, this investigation has been just concentrated on how mix uses affect travel behavior in terms of mode share, non-motorized travel (walking and cycling) and average trip length. As transportation modes is one of the main pillars in achieving sustainable transport. The last two decades, in Iran, have witnessed many studies base on the relationship between land use and public transportation. Most of these researches have been concentrated on finding land use factors which cause increase in the use of public transportation. In the city of Shiraz, in particular, some studies have been also conducted on the role of land use distribution on trip generation and the impacts of urban density on car dependency. One of www.ccsenet.org/jsd