scholarly journals Network-Level Safety Metrics for Overall Traffic Safety Assessment: A Case Study

2021 ◽  
Author(s):  
Xiwen Chen ◽  
Hao Wang ◽  
Abolfazl Razi ◽  
Brendan Russo ◽  
Jason Pacheco ◽  
...  
Keyword(s):  
Traffic Safety ◽  
Safety Assessment ◽  
Safety Metrics

scholarly journals Urban traffic safety assessment: A case study of six Indian cities

2016 ◽  
Vol 39 (2) ◽  
pp. 95-101 ◽  
Author(s):  
Dinesh Mohan ◽  
Geetam Tiwari ◽  
Sudipto Mukherjee
Keyword(s):  
Traffic Safety ◽  
Safety Assessment ◽  
Urban Traffic ◽  
Indian Cities

scholarly journals Case Study on Safety Assessment of Rockfall and Splash Stone Protective Structures for Secondary Excavation of Highway Slope

2021 ◽  
Vol 2021 ◽  
pp. 1-9
Author(s):  
Guan Jiang ◽  
Zhongju Feng ◽  
Ruixin Zhao ◽  
Fuchun Wang ◽  
Xiang Yu ◽  
...  
Keyword(s):  
Traffic Safety ◽  
Safety Assessment ◽  
Protective Structure ◽  
Analysis Program ◽  
Mechanical Excavation ◽  
Forbidden Region ◽  
Protective Structures ◽  
Term Field

Rockfall occurs on the excavation of the slope of highway resulting from excavated rock pieces. In order to solve the problem of rockfall protection during the disturbance of high slope secondary excavation, rockfall analysis program RocFall was used to perform inverse calculation for rockfall path of excavation disturbed rock. Based on a case study of a reconstruction and expansion project, two rockfall movement models were proposed under excavation disturbance. Moreover, the safety of protective structures under five protection schemes and different initial rockfall movement points is evaluated according to the rockfall interceptions rate. The evaluation results were further verified by long-term field observation. The results show that the protective structure at the slope top has a better interception effect to rockfall. It was difficult to intercept the splash stone, which threats to the traffic safety of the existing roads. According to different construction points of mechanical excavation and the interception rate of splash stone by the protective structure, the forbidden region and safety region of mechanical excavation were proposed.

Safety Assessment of Long Term Serviced Pressure Vessels: A Case Study of Typical Refining and Chemical Plants in China

2021 ◽  
Author(s):  
Zhiyuan Han ◽  
Guoshan Xie ◽  
Haiyi Jiang ◽  
Xiaowei Li
Keyword(s):  
Pressure Vessel ◽  
Safety Assessment ◽  
Failure Modes ◽  
Pressure Vessels ◽  
Time Dependent ◽  
Chemical Plants ◽  
Safety Specification ◽  
Detailed Assessment

Abstract The safety and risk of the long term serviced pressure vessels, especially which serviced more than 20 years, has become one of the most concerned issues in refining and chemical industry and government safety supervision in China. According to the Chinese pressure vessel safety specification TSG 21-2016 “Supervision Regulation on Safety Technology for Stationary Pressure Vessel”, if necessary, safety assessment should be performed for the pressure vessel which reaches the design service life or exceeds 20 years without a definite design life. However, the safety and risk conditions of most pressure vessels have little changes after long term serviced because their failure modes are time-independent. Thus the key problem is to identify the devices with the time-dependent failure modes and assess them based on the failure modes. This study provided a case study on 16 typical refining and chemical plants including 1870 pressure vessels serviced more than 20 years. The quantitative risk and damage mechanisms were calculated based on API 581, the time-dependent and time-independent failure modes were identified, and the typical pressure vessels were assessed based on API 579. Taking the high pressure hydrogenation plant as an example, this study gave the detailed assessment results and conclusions. The results and suggestions in this study are essential for the safety supervision and extending life of long term serviced pressure vessels in China.

scholarly journals VEHICLE – PEDESTRIAN CONFLICT: A CASE STUDY IN UNIVERSITI PUTRA MALAYSIA

2019 ◽  
Vol 17 (10) ◽  
Author(s):  
Noorain Mohd Isa ◽  
Ahmad Zaharin Aris ◽  
Zakiah Ponrahono ◽  
Rosta Harun
Keyword(s):  
Traffic Safety ◽  
Rural Areas ◽  
Research Topic ◽  
Daily Activities ◽  
Level Of Service ◽  
Pedestrian Movement ◽  
Open Research ◽  
Urban And Rural Areas ◽  
Manual Calculation

Vehicle-pedestrian conflict is a commonly unsafe event that occurs in both urban and rural areas, especially in developing countries. It is still an open research topic, mostly in traffic safety and urban planning, which is utilised for evaluating the behaviours of vehicles and pedestrians at a non-signalised marked walkway. Three stations were selected based on higher daily activities to calculate the regularity of pedestrian movement. A manual calculation method was applied, and the calculation was done only during the daytime. Three different teams were formed to obtain the measurements at the three different sampling points simultaneously. A present study on preliminary vehicle-pedestrian conflict reveals the frequency of pedestrians in a concentrated area and its Level of Service (LOS) in Universiti Putra Malaysia (UPM) Serdang. The findings show that rush hour occurs during the mid-day in weekday, when students have finished their classes and adults have gone out for other businesses.

scholarly journals Analysis of Traffic Accidents in the Area of Small Towns in the Republic of Croatia

2012 ◽  
Vol 21 (2) ◽  
pp. 129-140
Author(s):  
Vinko Višnjić ◽  
Marko Pušić
Keyword(s):  
Key Words ◽  
Traffic Safety ◽  
Safety Assessment ◽  
Traffic Accidents ◽  
Road Traffic ◽  
Small Towns ◽  
The Road ◽  
Road Traffic Safety ◽  
The Republic ◽  
The Town

The safety of road traffic in small towns in the Republic of Croatia is not at a satisfactory level. As proof, the safety of road traffic participants in the area of the town of Nova Gradiška and its wider environment has been studied and analyzed. The paper includes the available data in the period from 2000 to 2007. The analysis and the assessment of road traffic safety can be applied also to other towns and counties of the Republic of Croatia. Having in mind that there are 531 settlements in the Republic of Croatia (119 towns and 412 districts), out of which only 78 are larger than 10,000 inhabitants or 14.69% of the total number, which means that the analysis could be made for any settlement in the Republic of Croatia. The road traffic safety assessment was conceived according to the modified Smeed model which may be applied for any settlement or town. The road traffic safety analysis has led to the conclusion that safety of all the traffic participants is endangered. This paper provides solutions about what has to be done in order to reduce the danger to all the road traffic factors. KEY WORDS: drivers, traffic, traffic accidents, safety and small towns

scholarly journals Management of High Risk Road Sections of Sarajevo - Romanija Region (Case Study)

2016 ◽  
Vol 1 (1) ◽  
Author(s):  
Valentina Mandić ◽  
Danislav Drašković
Keyword(s):  
Transport System ◽  
Traffic Safety ◽  
Road Safety ◽  
Road Traffic ◽  
High Price ◽  
Safety Control ◽  
Social Growth ◽  
Analytical Monitoring ◽  
The Status

Road traffic, as a part of the entire transport system, is an important factor of social growth and development, which is necessary to create conditions for its safe operation, bearing in mind that all the benefits of this phenomenon are still paying a high price of unnecessary human suffering. In a contemporary society, there is a large number of institutions that play a role in the functioning of the transport system, but they stand out as the holders of activities and measures to improve traffic safety. Given that the number of accidents in recent years has reached a worrying level, in the interest of society is to reduce the number of accidents, or to increase traffic safety, because the consequences that the society is submitting in the form of human casualties and material damage are large. The model for the absolute traffic safety does not exist, but a permanent analytical monitoring of the status of road safety, control and regulation of traffic and taking measures to eliminate the risk factors can greatly increase the level of traffic safety.

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