جستجوی مقالات مرتبط با کلیدواژه "سرعت غیرمجاز" در نشریات گروه "عمران"

By consideration of spreading roads, increasing vehicles, a consequently increasing inner-outer travelling, accidents and violations turned into significant problem in the part of road transportation. In this regard, The aim of this study is evaluating the effect of increasing the number of vehicles on increasing the number of accidents an violations in Bushehr-Brazjan is considered as an important and related place to answer the question which cause the traffic accidents, on the other hand, related to this problem a few studies have been implemented on the Bushehr-Brazjan road. This research is a descriptive-analytical study that Bushehr-Brazjan road axis was studied as a research road axis based on available information and based on statistics of violations due to speed, unauthorized distance and road accidents in the mentioned freeway. Given that the data collected is quantitative and the research seeks to investigate and determine the relationship between the variables, Pearson correlation coefficient has been used to measure the relationship. Also, according to the distribution diagram between the dependent variable and the independent variable indicating the existence of a linear relationship between the variables linear regression has been used. Relevant information was collected and evaluated in consecutive years (2014-2019). The results showed that the increase in the number of vehicles affected on 93% of accidents, 83% of speeding violations and 81% of speeding violations. Also, by considering the independent variables and the use of the multivariate linear regression equation, the number of accidents for the coming years can be predicted.

Speeding reduces a driver’s ability to react and maneuver and results in a greater stopping distance. According to the literature, inappropriate speed is resulted from two basic problems. One is the selecting inappropriate speed while the proper speed is clear. The other is the failure to perceive the proper speed according to the environment. Regardless of the reason, speeding increases the crash severity and is among the most significant contributing factors to fatal crashes. The current paper presents the potential measures which can address these types of problems. These measures include 1) set appropriate speed limit 2) improve driver awareness of speeding-related safety issues 3) improve speed enforcement efforts 4) communicate appropriate speeds, and 5) make sure that roadway design and traffic control elements support appropriate and safe speeds. With the review of the potential and practical safety measures, the manuscript provides a complete package which can be of notable interest for researchers aiming to reduce speed-related crashes.

Based on the change in classification of the ten most important reasons of early death of diseases and injuries¡ traffic accidents will be changed from ninth reason to third reason in coming decade. Considering the most important reason in traffic crashes is exceeding allowable speed¡ this study is aimed to estimate the amount of effects of speed controlling cameras on the declining the number of accidents and the speed chosen by drivers. To gain that¡ some statistical descriptive criteria have been used to analyze records of speed and traffic volume on the freeway between Zanjan and Tabriz. These criteria are used for the data recorded in 1390¡ 1391 and 1392. Estimate the impact of speed cameras on reduce accidents on the future with using of ARIMA modeling of time series techniques have been performed.The analysis revealed a decrease cameras installed in Tabriz-Zanjan Freeway (3 ± 20%) at an average speed of passing vehicles. The reduction of (4 ± 30%) in violation of the speedlimits and eventually recorded over speed limit is too low.This study shows the cameras have had a significant effect on average speed reduction in general in all length of the freeway.