جستجوی مقالات مرتبط با کلیدواژه "motorcycle" در نشریات گروه "عمران"

Today, the metropolis of Tehran, like many metropolises in developing countries, is facing serious problems due to the ever-increasing demand for transportation and the problems of the public transportation system. One of these problems is the widespread use of motorcycles in these cities, which has caused an increase in air pollution, noise pollution and accidents. Today in our country, due to the high number of traffic accidents, the issue of safety, especially the safety of motorcycle riders, is of great importance. Therefore, this study has been conducted with the aim of identifying the factors affecting the damage or injury of motorcycle accidents in Tehran city with the help of information from accident forms filled by traffic police officers at the accident scene in May and November 2013. The double logit model was used to build models of motorcycle accidents in May and November 2013 in Tehran. The results show that factors such as the type of land use where the motorcycle accident occurred, the direction the motorcycle collided with another vehicle, the type of road and the lighting of the air have an effect on the severity of the motorcycle accident and, as a result, whether it is injured or damaged.

In traffic engineering, we deal with a coefficient called the coefficient of riding, which is used to convert the traffic of heavy vehicles into "rides." Buses, trucks, trailers and have a coefficient larger than one, and a bicycle and a multiplier of less than one, which is one third in the code of some countries, and one in two (half) in others. In Iran, this coefficient, like other coefficients in different branches of knowledge and technology, is based on external coefficients and regulations of other countries. In this study, the coefficient of motorcycle riding at the intersection of the lamp is calculated, and the criterion delay parameter is the comparison and calculation is. Accordingly, the coefficient of ride equals the delay created per motorbike delayed by each car in the stream involving only a single riding car. In this study, the coefficient of homogeneity for meta-cycles was obtained, with an average coefficient of 0.4. The results of descriptive statistics analysis of these several time-based groups based on vehicle type along with Zamani Kelly's headline have shown that among the mean values of different groups, two riding groups are very close in pursuit of riding and riding in the pursuit of the engine. All groups with a mean time header are larger than other types. In other words, the average riding time range for riding and motorcycle groups is significantly smaller than the average for the other three.

One of the major concerns of big cities is the high volume of traffic, the use of public transport, more safety and a proven solution to this problem. For reasons that are addressed in this research, many people are interested in using motorcycles at city level. The purpose of this research is to investigate the causes of citizens' tendency to use motorcycles instead of using public transportation in Qom. By interviewing the experts, the variables that influenced the use of motorcycles were determined; variables include: economic factors, factors related to the quality of infrastructure, factors related to urban traffic, and the lack of culture for the use of public transport. In this research, a descriptive-survey method was used to investigate the hypotheses and answer the research questions. The statistical population of this study includes off-road motorcyclists whose motorcycles were seized in the past month; a sample size of 341 people was determined using Morgan's table. A researcher-made questionnaire was used to collect required data in this research. A confirmatory factor analysis test and then structural equation model were used for validity of the questionnaire. SPSS software was used to analyze the collected data and to investigate the hypotheses of the research. After analyzing the data, all four hypotheses were confirmed with 95% confidence. That is, variables of economic factors, factors related to the quality of infrastructure, factors related to urban traffic and the lack of culture of using public transportation affect the tendency of citizens to use motorcycles in Qom.

Identifying the effective factors in traffic accidents in terms of transport safety is one of the basic issues that researchers have been focusing on for many years. A severe incident is a comprehensive result of several variables that causes accidents. The purpose of this study is to consider the effective factors on improving traffic safety and reducing motorcycle losses. Eighty five person selected from statistical population which included 200 person with experts in the field of accidents and safety and regulations. In this research, information was collected through a library study and the data was analyzed using the AHP technique and the Expert Choice software. This practical research has been conducted by designing a main question called "Effective components on improving traffic safety and reducing motorcycle losses". The results of this research, by introducing effective components, define the importance of each component for quantitative evaluation. Accordingly, the five main components of the effective factors on improving traffic safety and reducing motorcycle losses, together with their weight, are control of the skill of motorists, frequent education and information by the media, systematic planning to reduce intra-city travel citizens with motorcycles, judiciary intervention in the discussion of motorcycle driving violations and the strict implementation of motorcycle driving laws. he results of this paper can provide an appropriate perspective on designing a model for better understanding and preventing accidents from motorcycle accidents in the future by identifying the factors affecting the promotion of transport safety and reducing motorcycle losses.

Motorcycles can be considered as a special transport mode due to their different size and maneuverability compared to other vehicles. According to the available data, the number of motorcyclists has been increased dramatically in recent years. It could be the result of its associated expenses and facilities: it is cheap and fast! However, the motorcycle riders and passengers are much more vulnerable to injury and death in vehicular crashes because of the lack of protection in the vehicle compartment. Therefore, it has become one of the major concerns of the road authorities to minimize the motorcycle crash count and severity by addressing precise objectives with comprehensive strategies. These measures should approach motorcycle safety from a variety of perspectives. This paper reviews the associated literature and lists various measures including enforcement; engineering and road user’s training. It provides a wide-ranging tool to assist the researchers and planners aiming to enhance motorcycle safety.

Accident risk equal to the number of accidents for a given exposure index is an appropriate measure to evaluate the effects of various factors on the occurrence of the accident. The main exposure index used to calculate accident risk، vehicle- kilometers are traveled. The main problem of vehicle-kilometers covered by this lack of information، especially when exposed to a specific group of users of the transport system (eg young drivers) or special circumstances (e. g. during the night) is to be doubled. The researchers therefore indirect measures of exposure such as the induced and the quasi-induced exposure to solve this problem have been proposed. In this studyinfluence of human factor (age) and environmental factors، including location (urban، rural)، site geometry (straight، curve horizontal) and lighting (day، night)، in risk of motorcycle driver at-fault in accident investigated. the Method was based on concept of quasi-induced exposure that based on innocent drivers /riders in two-vehicle accident with one-fault and one non-fault can be considered as a sample of the total population of drivers in time of accident. Data related to traffic accidents in 1390 in Iran which a total of 39،014 samples for analysis were. The results show that probability of at-fault younger and older drivers are more than middle-aged drivers and environmental factors، including rural (RR=1. 25، Sig<. 006)، curve (RR=1. 31، Sig<. 012) and day (RR=1. 12، Sig<. 026) increase probability of at-fault motorcycle drivers. Also effects of environmental factor on young drivers are most of the other drivers and lighting effect in urban and direct routes are less than rural routes and horizontal curves. Finally construction special routes in rural routes for motorcycle،more monitoring in inspection of the motorcycle lighting system، practical training in increasing skills and education of drivers about the dangers of motorcycle to reduce risk of motorcycle accidents are suggested.