Evaluation and Estimating the Impacts of Infrastructures and Logistics on Foreign Trade of Selected Countries with Emphasis on I. R. of Iran

This paper tries to study and access the impacts of improving the logistics performance index and It’s sub indicators on trade. Thus has used of accessible hard statistical data, for 121 selected countries of developed, developing and least developed economies and two econometric models "Marin band" and "Gravity model". The results show that: A) From the estimating of export, import and total trade with logistics’ (LPI 2010) as depended variable, increasing one percent in quantity value of logistics performance index for 121 economic nations especially Iran, the rise becomes 3.451 percent in export, 3.291 percent in import and 3.291 percent in total trade. B) from the six sub indicators of logistics performance index, the rank of importance degrees for developing total trade has been: 1) Frequency with which shipments reach the consignee within the scheduled or expected time with 3.104, 2) Competence and quality of logistics services with 3.005, 3) Ease of arranging competitively priced shipment with 2.605, 4) Quality of trade and transport– related with 2.376, 5) Ability to track and trace consignment with 2.370, 6) Efficiency of the customs clearance process with 2.094.