فصلنامه راهور
پیاپی 11 (پاییز 1389)

Road Repair and Maintenance is very important parameters in usage of maximum capacity of road and prevention because of high investment of these process, planning organizattion and consideration to correlate goals is required for managing efficiently the existing road network. This thesis describe the development of model which can assist make the best strategies to achieve goals such as minimize M&R agencies and road user costs and maximize of efficiency of M&R strategies to preserve the pavement performance ever to acceptable condition and especially improvement safety condition of roads. first stage was determinate an index for evaluation of pavement efficiency, then with consideration of lack of pavement stochastic data for road network of our country, a prediction model to forecast pavement deterioration was chosen. After that an integer programming model for optimization of budget allocation for pavement repair and maintenance was developed and in the final stage, with consideration of existence of pavement and traffic date model on the Sharifabad-Garmsar run and respective result were analyzed.

Since in Iran like another developing countries, there aren`t any advanced parking manaagement systems in order to access easily and quickly to multi-story car parks so drivers have to drive additional distances to reach these car parks that may leads to increasing traffic congestion, air pollution, irregular fuel consumption, vehicle depreciation and mental side effects. Also as in Iran constructing and using of advanced parking managemment system don`t exist hence, on-street parking especially in CBD areas will cause to deccreasing of road capacity, worsening of road safety, speed loss and increasing of accident probability. Regarding to this problem it could be possible to perform some activities in order to improve using of multi-story car parks in dense area of cities and make positive effects on the traffic situation of CBD areas. In this article the main purpose is gaining and using of the achievements and experiments of previous studies that were carried out in some different cities with the title of “multi story car parks and performing technical solutions to facilitate access to this type of parkiing, additionally increasing of their capacities and efficiency around the world cities”. In this way firstly the Yokohama parking space finder system will be discussed. This system has presented four major roles, and by providing the data from road signs can implement guidance for traffic flow. For instance how can access to city parking lot or how many parking spaces they have. Additionally in this article advanced parking guidance and information system (PGIS) in China will be explained. This system can provide some useful information for drivers in order to find parking addresses effectively and guide them to the places of vacant parking spaces. After describing of PGIS, the new technologgies of mechanized car parks will be discussed. Technology of mechanized parking is the combination of previous mechanical methods and new mechanized systems. Being modern and intelligent, having coordination between their components and flexibility performance are the advantages of this type of parking toward other type of car parks. Also constructing and using of mechanized parking will lead to increasing of the capacity of car parks rather than conventional car parks. Finally after analyzing of all mentioned systems, summarizing of the above article will be presented.

Taking advantage of intelligent managing equipments is vital for making safe tunnels which should be used with regard to necessities and range of tunnel There for it can be effective to perform comparative studies for touching the latest achievements of the other countries in the field of tunnel intelligent safety equipments. The present research has been conducted through investigating documents and case study methods in a practical approach. Using Likert spectrum and converting qualitative criterions to quantitative ones, this research compares Resalat tunnel status. among tunnnels statistics community in view point of having tunnel managing intelligent system. Results of the research indicate that equipping Resalat tunnel by a number of managing intelligent system and subsystems is so that the tunnel has fifth rate on the other tunnels which have been studied and no one of seven kind examined systems in this research is completely applied on Resalat tunnel. It then concludes that Resalat tunnel has some demerit points, including: lack of intellligent systems of sliding detection, liquids lever measurement, violations registration, radio alarming and extinguishing, and not designing safety corridors for exiting from the tunnel.

The first in this paper a simple algorithm of the ABS operation in a quarter vehicle model is presented. On the second the optimum and effective domain of friction of coefficient is obtained by the simulated program. It is deduced that reduction in friction of coefficcient domain or increasing the friction of coefficient magnetude will reduce the stopping distance and stop time. The modelling of brake has been done in the simulink of Matlab software. The desigend model is completely parametric and can investigate the effect of different variables on different condition.

Forecasting accidents means forecasting traffic safety according to information’s and observations. Analyzing traffic accidents and recognition of dangerous potential sources, presenting forecasting models will have more importance. Quantitative forecasting modeels com be classified in two main groups: chronological series method and case & effect forecasting method. Here, previous researchers concentrate more on different kinds of forecasting modeling methods, but reasoning of recent researches is that a single method can’t provide a realiistic forecasting model, and future perspective should focus on a compound forecasting method. Nonlinear compound models have a suitable efficiency on nonlinear problems and in addition, have a high potential to forecast driving accidents. The main goal of this essay is to acquire ability to percept main principles and also, current tendencies for comppound methods. Finally, comparative analysis to compare current forecasting methods has been presented.

As the organizations contrast with challenges and give priority to the continuous welfare, there is more need to support and warrant the personal and deal them with work. In personal operation, the organization uses a set of talents and potential abilities in order to improve the organization and give actuality the potential poweers and great talents to constructiveness causes improvement and uniformity with organization, so in order to access the goals, effective management of these sources is valuable. Therefore, it is important to Increase capability of officers. Increasing capability is a modern & effective technique to improve organizational operation. Through increasing capability programs, work capacity, vest power, increase ressponsibility and so/operation and effectiveness also increases. In this essay, we discuss about different kinds of capabilities, methods, obstacles, challenges, results,… which we can do effective steps in order to increase capability of officers, observing the principles. This essay presents according to duties of traffic police and the efforts they can do to improve capability of traffic police.

The success of organizations is based on the personal specifications of personnel and how to change them into a long-term performance. Human resource management factors as] a source of competitive advantage for organizations affecting the efficiency of personnnel has a great importance for organizations. The development of organizations can be extended by identifying these factors and improving them. There are a wide range of managerial human factors that managers can focus on to achieve success and to improve the efficiency of personnel. This study aims at discussing human resource management factors that can affect personnel efficiency of traffic police. Therefore, three hypothesis are given and, in the first step, after interviewing with some managers and experts, three human resource management factors (performance appraisement of personnel, particippation of personnel in decision making processes, and training) are selected and then, through the use of a questionnaire, the effects of these factors on the efficiency of personnnel are evaluated. Finally, the ranking order of these factors is determined. The results show that participation of personnel in decision making processes has the greatest priority and is followed by training and performance appraisement of personnel as the second and third priority levels, respectively.