نشریه مهندسی ترافیک
پیاپی 64 (بهار 1395)

Today, with development of different industries and tendency of human beings for urbanity, most of the modern cities have become crowded. This has led to many undesirable problems such as noise pollution which can affect the health of mankind. It has been proved that many physical and mental illnesses are possible side effects of the noise pollution. Transportation sector has been introduced as a main resource of noise pollution. In recent years, different technologies of electric cars and motorcycles have been considered as a new era in the transportation industry. Since, the noise pollution generated by these new technologies is negligible, it can be expected that by presence of these new technologies, the share of transportation sector in noise pollution of the cities would decrease. In this paper, we tried to investigate this important feature of electric transportation in Tehran. In this regard, three possible penetration scenarios including, low, average and high scenarios are defined for presence of electric cars and motorcycles in transportation sector of Tehran. It has been assessed how the noise pollution of this city would change considering these penetration scenarios. It has been shown that a remarkable improvement in noise pollution can be expected due to usage of these technologies.

intervehicle ad hoc networks are the bases for intelligent transportation systems which are able to transmit traffic data and road condition to help and guide drivers to manage the events on the network efficiently. In inter vehicular ad hoc networks, it is important to transmit data from a data source vehicle to other destination vehicles on the network. In this study, integrated solutions are used to properly assess the node toward the event regarding the distance, time, events angle and the vehicle. And in the following, the purposeful transmission of data is used with vehicles grouping under the conept of friendship mechanism in order to evaluate the event happenings. Using an integrated fuzzy controler system, character decision and management of events occurred more efficently.

This study aimed to investigate the relationship between quality of work life and organizational performance company operation command centers of Tehran Urban & Suburban railway (TUSROC) is done. The purpose of this study on the nature and type of application and the method of data collection, is descriptive. The population consisted of 298 employees of the company operating the command centers of Tehran Urban & Suburban railway (TUSROC) that Morgan on 169 subjects were selected using stratified random sampling. Data collection was done in two ways library and field tools for assessing the quality of work life and organizational performance, questionnaire. To assess the quality of work life of standard questionnaires to measure organizational performance Walton and Hersey and Goldsmith used a standard questionnaire to measure is the reliability of the questionnaire, the Cronbach's alpha was used. Finally, data from the questionnaires, the software SPSS 21 using charts and graphs, descriptive and inferential statistical tests were analyzed. The results show that a significant positive relationship between all components of QWL Walton organizational performance. Among the components of 8 QWL Walton components of a fair and adequate social dependence of work life as very minimum and maximum (average) rate perceived quality of work life by staffs command, the addition of variable 8 Walton components provide the opportunity for constant growth and security command centers have the most impact on organizational performance and component integration and social coherence in the organization has a minimal effect on organizational performance target is personnel.

Iran is one of the eventful countries of road traffic accidents in the world and the use of safety belts is known as the most effective in preventing severity of injuries and deaths caused by road accidents. However, many drivers do not wear their seat belts while driving. To encourage drivers to use seat belts, providing appropriate messages based on scientific theories is very important.

The purpose of thisstudy was to use extended parallel process model (EPPM) in developing an effective educational program to promote safety belt use among drivers in Tehran.

This is a quasi-experimental study and conducted on some drivers who were stopped by police officer because of driving without seat belts using. The site and participants of survey were selected by multistage random sampling. The message developing and educational intervention was done after analyzing pre-test results.

among all 209 drivers, 80.4 percent were male and mean age of participants was 41 years old (SD =1.3). Measuring the Risk Behavior Diagnosis Scale, based on EPPM showed that drivers were in general position of fear control process. In the other word, they had a lower level of perceived efficacy in comparing to perceived threat. Multiple regression analysis before educational intervention showed that perceived susceptibility and perceived self-efficacy is a predictor of self-reporting use of seat belt among drivers in Tehran(R2 =0.38 , P< 0.05(. After intervention, participants were placed in the danger control process or were in a position to adopt protective behavior. Comparing before and after the educational intervention, ordinary self-reporting of seat belt wearing increased about 24%.

The findings suggest that focusing on messages with high efficacy contents; can promote seat belt wearing among drivers

In this study, the prioritization of road guide signs in Azadegan highway have been described. Azadegan highway is one of the most important corridor in city of Tehran that hasthe fundamental role in Tehran transportation system. After analyzing the desired area which includes both north to south and south to north routes, the major problems were identified. In order to employ AHP technique, three evaluators who are experts in the field of transportation engineering have participated in this study. Expert Choice 11 have been used to solve the AHP model. Prioritizing of the alternatives have been carried out after calculating the weights of criteria and the lastpoint of alternatives. On this basis,theproblemsrelatedtolackofroadguide signs areplacedatthe topoftheprioritizationprocess andtheproblems related to defectsin addressing and columns are placed in the next positions.

Traffic controlsystems and equipment are so effective on traffic flow and could change the favorable conditionsinto inappropriate term and reverse. In this regard, one of the most important equipment is traffic lights those nowadays are extremely being used all around the world. Also the efficiency of these traffic lights is very important and should be customized with the local conditions where the lights have been set.In this article, some parts of a major project is quoted, which the final aim was estimating the capacity, analyzing and founding level of service (L.O.S) in some signalized intersections. For this purpose volume, type of vehicles, row length and delay time gathered with counting in intersections. Then according to HCM2000 standard and its related software, gathered data were analyzed. In this article on of the signalized intersections in Rasht which named “Hamidian” is studied and the advantages indicates that the intersection is on the worst level of service and is not efficient, that the traffic lamp with unadjusted timing is one of the main reasons of that.

Travel time is one of the main economic parameters of transport and sometimes saving time is the biggest benefit of roads traffic modifications. In many previous studies, have been investigated the effect of reducing the time on the economic benefits resulted from implementation of projects improving public transport systems. This paper reviews the role of reduction in travel time resulting optimization of Birjand bus system on increasing of users’ economic benefits. In this study, has been discussed the city bus lines on two separated stages involving before and after of the system optimization. The results showed that waiting time of passengers in studied lines has reduced to 53.32% after the optimization. Therefore, based on completed questionnaires in routes studied of Birjand city, implementation of the optimization has 59.68% positive impact on users’ economic benefits.