When new construction or major reconstruction is planned، the current practice is for a location and design engineer to select the interchange type for a given location. The engineer relies upon projected traffic data، right-of-way needs، environmental concerns، safety، and project costs to determine which interchange configuration will most efficiently serve the needs of a certain area. The purpose of this study was to develop guidelines to aid designers in the preliminary selection of the optimum interchange type at a location. This study will provide engineers a starting point to begin their analyses. It is hoped that the development of these guidelines will result in reduced costs، improved levels of service، and increased uniformity. The literature review was performed in order to synthesize the findings of earlier studies on interchange selection. Information on interchange type selection processes was reviewed، and the relative advantages and disadvantages of the various interchange types were explored. A number of sources were used to develop the guidelines. A literature review helped determine current methods for interchange selection. These review also assisted in determining the relative advantages and disadvantages of the various interchange types. In terms of assessing the best pattern for interchange Getram software selected and various types of interchanges modeled. To discover the total performance cost of each pattern an index developed and by calculation of this cost index optimum interchange types were rated.
- حق عضویت دریافتی صرف حمایت از نشریات عضو و نگهداری، تکمیل و توسعه مگیران میشود.
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