فصلنامه راهور
پیاپی 28 (زمستان 1393)

One of the perennial challenges Interchange design in overcrowded urban areas in developing countries, is right of way and is the enormous cost of the trustee Organizations incur. Freeway-to-freeway interchanges generally consume large amounts of right of way (ROW). Especially in dense urban areas of developing countries, attempts to limit the amount of ROW have contributed to system interchanges that are poorly designed and have capacity problems. Freeway designers need to provide drivers with large capacities while saving spaces in dense urban areas. The nano interchange, a new system interchange, attempts to address this challenge. The nano interchange allows each of the four mainline freeway directions to occupy a different level. All ramps are then direct connections with one horizontal curve. This ramp arrangement can lead to shorter travel distances and lower amounts of ROW. In this project, All-directional Interchange replacement with nano Interchange Was evaluated using microscopic simulation (Aimsun software) with a Case Study (Sheikh Fazlollah, Mohammad Ali Jinnah freeway) and the traffic flows under different spectrum. The results of this project indicated better performance of the directional Interchange in terms of safety and traffic parameters with comparison of nano Interchange.

Since part of pedestrians is more than other route users among different kinds of morality arising from car accidents, it is necessary be taken effective steps to improve safety of mentioned group by proper management. One of the most important issues in management of routes Safety is determining priority of different execution strategies to safety improvement. It is necessary to consider criterions such as implementation costs, rate of effectiveness, the number of decision making organizations and duration of effectiveness to choosing strategies, in order to appropriate priority of present solutions. It is needy a multi-criterion decision making in order to involve the foregoing in management and priority. In this research, first, required data is prepared with filling out the questionnaires by experts in fields of safety transportation in order to evaluate options, and seven proposed strategies are prioritized with use of fuzzy analytical hierarchy process. Results indicates that the choice of training traffic rules to both pedestrians and drivers will be the most important factors to pedestrian`s safety improvement and also other choices are at next preference in this research

Today, in all countries to enhance vehicles traffic safety, the many forms barrier along and median of roads used.In order to optimize the safety such guardrail, maintenance methods, and the degree of rigidity, they have always been of interest to engineers. The aim of this study was to evaluate a simple model of safety guardrail that is commonly used in Iran. For this purpose, a few segments of the highway and the main road of Khuzestan were evaluated in further studies. This model from the perspective of the bending strength against the force was evaluated. The results showed that if the Weak Axis angle of about 20 degrees to the axis of the road direction and they will be installed in the proper location, Increased hardness and bending strength of the guardrail, and consequently, can help in restoring vehicles to the direction. At the end, optimized guardrail placement devices installed to be introduced in order to increase vehicle power and thus gradually increase the safety of vehicle occupants

Parking management is one of the most important tools in the urban management. Different levels of performance, traffic and parking facilities can affect the quality of urban life. Incorrect decisions and causing adverse effects on non-standard management of urban traffic system, damage and destruction of the environment, the increase in construction costs and impede economic progress . After several decades, the increase was not enough space to park cars. The high cost of parking facilities, a detailed assessment mandated to manage and locate parking . This paper management and feasibility parking place in the cities, in light of the park and the factors affecting supply and demand they check. Here we have two objectives 1. The use of GIS technology to solve parking problems in cities 2. Create a strategy to expand the parking management system, to provide a permanent solution to the problem Parking lot . The study is based on analysis and opinion spss geographical environment. The evaluation of access patterns in the study area based on the superposition of technology aided spss, along with considerations demand multi-use park land, checked . Finally, the location of three mainresults 1. Locate parking facilities in urban areas, (2) improve the efficiency of land used for parking through the evaluation of multi-user sites, need satisfaction 3. access.

One purpose of the study of culture, the attention of the audience of the importance of cultural influence on social behavior, rules and methods of instruction. The research was a descriptive survey. The population of the city is the study of all drivers. Data analysis using logistic regression and multivariate analysis of variance was performed. The results showed that drivers of high social status in the community are more likely to have an impact on driving culture

The study of effect of environmental physical activity on traffic accidents Nowadays, the custodians in traffic area have found that environmental physical factor is of the most effective elements involved in accidents caused by traffic crashes. This paper presents results of studies conducted in order to reveal the potential influence of EPA (solar, geomagnetic and cosmic ray activities, and atmospheric changes) on the number of traffic accidents and related injuries, causalities and damages in Tehran metropolis (region 10 of municipality) during 2008-2012. The results showed that number of accidents caused by traffic crashes is reversely related to solar activities and directly to geomagnetic and cosmic ray activities, because these factors affect the human behavior and function significantly. The results also indicated that number of traffic accidents in cold months is more than other months due to some atmospheric situations like rain, strong winds, snow and sometimes frozen roads and also changes of solar, geomagnetic and cosmic ray activities. Analyze of probable correlation between traffic accidents and geomagnetic, electric and radio waves in roads of region 10 of Tehran’s municipality shows a high correlation coefficient between these waves and number of traffic accidents