scholarly journals Improvement of a bridge connection node with embankment by applying curved approach slabs

2020 ◽  
Vol 7 (2) ◽  
Author(s):  
Vladislav Andreev ◽  
Igor Ovchinnikov
Keyword(s):  
Road Safety ◽  
Technical Condition ◽  
Point Of View ◽  
Dynamic Effects ◽  
The Road ◽  
Approach Slabs ◽  
Road Pavement ◽  
Functional Quality ◽  
On The Road ◽  
Negative Shock

The article is devoted to improving the bridge connection node with embankment by application of curved approach slabs. The most important request by arranging of bridge connection with embankment is to ensure soft entry of transport from the approach embankment to the bridge for the entire period of operation. However, overtime on the road sections of bridge connection with embankment appear soil collapsing, cracks and birdbaths in the carpet. This problem is partially solved by the installation of reinforced-concrete approach slabs buried in the connection zone between the abutment and the approach embankment. Despite the use of straight approach slabs in the bridge-connection node with embankment, the formation of bumps of grade profile is observed, they reduce road safety, worsen the technical condition of vehicles, cause discomfort to the driver and passengers. From the structural and technological point of view, request by arranging of bridge connection by curved approach slabs higher functional quality can be achieved. Due to the soft passage of bridge connection node, it is possible to reduce the negative shock-dynamic effects, which will increase the durability of the connection node and approach road pavement. The article presents several possible to use bridge connection node structures through the use of curved approach slabs: concave, convex and S-shaped. A comparative analysis of bridge-connection structural versions will reveal the most effective construct that can ensure soft passage of the bridge connection node with approach embankment.

scholarly journals On the development of educational programs in the field of road safety in General and Supplementary education

2017 ◽  
Vol 6 (1) ◽  
pp. 53-59
Author(s):  
M.V. Doronina
Keyword(s):  
Children And Adolescents ◽  
Road Safety ◽  
Educational Programs ◽  
Point Of View ◽  
Supplementary Education ◽  
The Road ◽  
Age Related ◽  
At Risk Children ◽  
Learning Programs ◽  
On The Road

The article presents some approaches to the development of educational programs in the field of road safety in General and Supplementary education of children and adolescents. It addresses some learning programs for children, adolescents and parents that are proved to be highly effective for teaching safe behaviour on the road. This article also focuses on the analysis of the features of working with "at-risk" children and teenagers with behavior problems-as a special social and age related category, exposed to the greatest risk in terms of traffic environment. The article focuses on the characteristics of attitudes typical for children and adolescents from the point of view of safety on the road, and it also outlines possible actions to develop integrated training and prophylaxis programs for this age group

scholarly journals INVESTIGATION INTO THE STABILITY OF DRIVING AN AUTOMOBILE ON THE ROAD PAVEMENT WITH RUTS

Transport ◽  
2009 ◽  
Vol 24 (2) ◽  
pp. 170-179 ◽  
Author(s):  
Vidmantas Vansauskas ◽  
Marijonas Bogdevičius
Keyword(s):  
Mathematical Model ◽  
Mathematical Simulation ◽  
Road Safety ◽  
Road Surface ◽  
First Line ◽  
The Road ◽  
Road Pavement ◽  
On The Road ◽  
The Stability

The article reviews the stability of an automobile on the road pavement with ruts. The problems of road safety depend on many factors. One of those is the quality of the road surface. Big heavy lorries deform the road surface causing ruts especially in the first line of the road. The article analyzes the influence of the geometry of ruts on the stability of the automobile. A mathematical model of a 3D automobile and the interaction between wheels and the road surface and the geometry of the road surface are presented. The mathematical criterion of the stability of the moving automobile on the road surface with ruts is laid down. The results of mathematical simulation and the criterion of the stability of the moving automobile (60 km/h) on the road surface depending on the depth of ruts are introduced.

Incorporating Vertical Acceleration for Defining Driving Behaviour

2019 ◽  
Vol 9 (2) ◽  
pp. 38-48
Author(s):  
Laura Eboli ◽  
Gabriella Mazzulla ◽  
Giuseppe Pungillo
Keyword(s):  
Road Safety ◽  
Weather Condition ◽  
Relevant Parameter ◽  
Vertical Acceleration ◽  
The Road ◽  
Driving Behaviour ◽  
Road Pavement ◽  
Driving Conditions ◽  
The Difference ◽  
On The Road

Acceleration of a vehicle is composed of three components: longitudinal, lateral, and vertical acceleration. Longitudinal and lateral accelerations have been frequently considered as components for investigating driving behaviour, with the aim of improving road safety. But in particular situations during the motion of the vehicle, also vertical acceleration is relevant. In this paper, the authors want to demonstrate that vertical acceleration is also a relevant parameter to be considered in terms of road safety. The authors focus on the difference registered by considering only lateral and longitudinal acceleration and by considering also vertical acceleration in the analysis of driving behaviour through real tests on the road. All the parameters were registered through a global positioning system (GPS) device and a tri-axial accelerometer, which allow the geo-referenced kinematic parameters of the vehicle to be detected. For this purpose, over 110 tests covering about 600 kilometers were completed. All the experimental surveys were conducted in a good weather condition, under dry road pavement conditions, on weekdays, during day time and out-of-peak hours, in order to have no influence from the traffic flow. Each path was repeatedly run by the driver in order to collect the instantaneous speed and acceleration along the pattern. During the tests, about 40,000 instantaneous values of vehicle position have been registered. The survey interested a segment of the Italian National road n.107 (S.S. 107), in Southern Italy. The authors found that by considering vertical together with longitudinal and lateral accelerations, a higher number of unsafe driving conditions can be identified. More specifically, the proposed methodology allows 20% extra of dangerous driving conditions to be registered. For this reason, the authors retain that also vertical acceleration should be considered in the definition of the safety domain, because it determines the intensity of the exchange forces between the tires and road pavement, and in some cases, it leads to a loss of friction. Definitively, the authors retain that vertical acceleration is not only useful as indicator of comfort on board, but it has an important role also in terms of road safety.

scholarly journals Road safety inspection as a tool for road safety management – the polish experience

2017 ◽  
Vol 42 (1) ◽  
pp. 43-62
Author(s):  
Marcin Budzyński ◽  
Kazimierz Jamroz ◽  
Wojciech Kustra
Keyword(s):  
Road Safety ◽  
Safety Management ◽  
Technical Condition ◽  
Road Accident ◽  
Qualitative Assessment ◽  
Economic Losses ◽  
Safety Issues ◽  
The Road ◽  
On The Road

Abstract In Poland, road inspections were implemented in June 2014 on all national roads. Previous traffic surveys mainly looked at the technical condition of roads, signs and markings; other safety issues were overlooked. The main problem of the inspections is that the qualitative assessment is subjective which affects the classification of the sources of hazard on the road. The paper presents an analysis of the variability of the qualitative assessments of road defects when they are assessed by different teams of inspectors. On this basis, guidelines were developed for the classification of risks based on the relationship between sources of road hazard and the personal and economic losses involved in road accidents. These relationships are quantified using mathematical models to simulate the effect of hazard variability on the consequences of selected road accident causes on sections of the road network.

scholarly journals Road safety audit: a case study on NH-65

2018 ◽  
Vol 7 (2.1) ◽  
pp. 69 ◽  
Author(s):  
Tummala Bharat Kumar ◽  
Chukkapalli Jeswanth Chowdary
Keyword(s):  
Detailed Analysis ◽  
Road Safety ◽  
Road Network ◽  
Road Traffic ◽  
Point Of View ◽  
The Road ◽  
On The Road ◽  
Road Safety Audit ◽  
Major Highway

In India there is road network of 33 lakh kilometres of which nearly 65% of the cargo activity and 80% of traveller movement is on the road networks. National Highways constitute around 1.7% of the road network but carry about 40% of the aggregate road traffic. Number of vehicles has been increasing at a normal pace of 10.16% for every annum in the course of the most recent five years. Road safety audit is the formal methodology for getting accident potential and safety potential in the development of new road schemes and the schemes for the improvement and maintenance of the existing road facilities. Accident prevention and accident reduction are the two main strategies in the road safety. In this case study we analyse the NH-65 which is the major highway connecting VIJAYAWADA and HYDERABAD from the 270thKM to 247th KM. The highway carries considerable amount of traffic throughout the day and it has number of conflict points such as villages, industries. Detailed analysis of NH-65 will be carried out from the point of view of safety and geometric design aspects will be performed. This paper aims to identify deficiencies, improving design aspects, enhancing credibility of the roads.  

scholarly journals Load Measurement of the Cervical Vertebra C7 and the Head of Passengers of a Car While Driving Across Uneven Terrain

Sensors ◽  
2021 ◽  
Vol 21 (11) ◽  
pp. 3849
Author(s):  
Martin Svoboda ◽  
Milan Chalupa ◽  
Karel Jelen ◽  
František Lopot ◽  
Petr Kubový ◽  
...  
Keyword(s):  
Cervical Vertebrae ◽  
Vertical Direction ◽  
Cervical Vertebra ◽  
Parietal Bone ◽  
The Body ◽  
Human Organism ◽  
Dynamic Effects ◽  
The Road ◽  
Real Environment ◽  
On The Road

The article deals with the measurement of dynamic effects that are transmitted to the driver (passenger) when driving in a car over obstacles. The measurements were performed in a real environment on a defined track at different driving speeds and different distributions of obstacles on the road. The reaction of the human organism, respectively the load of the cervical vertebrae and the heads of the driver and passenger, was measured. Experimental measurements were performed for different variants of driving conditions on a 28-year-old and healthy man. The measurement’s main objective was to determine the acceleration values of the seats in the vehicle in the vertical movement of parts of the vehicle cabin and to determine the dynamic effects that are transmitted to the driver and passenger in a car when driving over obstacles. The measurements were performed in a real environment on a defined track at various driving speeds and diverse distributions of obstacles on the road. The acceleration values on the vehicle’s axles and the structure of the driver’s and front passenger’s seats, under the buttocks, at the top of the head (Vertex Parietal Bone) and the C7 cervical vertebra (Vertebra Cervicales), were measured. The result of the experiment was to determine the maximum magnitudes of acceleration in the vertical direction on the body of the driver and the passenger of the vehicle when passing a passenger vehicle over obstacles. The analysis of the experiment’s results is the basis for determining the future direction of the research.

scholarly journals The Evaluation of Experimental Variables for Sustainable Virtual Road Safety Audits

2021 ◽  
Vol 13 (11) ◽  
pp. 5899
Author(s):  
Yeonsoo Jun ◽  
Juneyoung Park ◽  
Chunho Yeom
Keyword(s):  
Road Safety ◽  
Traffic Light ◽  
Scenario Development ◽  
Driving Simulators ◽  
Traffic Condition ◽  
The Road ◽  
Road Pavement ◽  
Net Promoter ◽  
Road Safety Audits ◽  
Road Marking

This paper evaluates experimental variables for virtual road safety audits (VRSAs) through practical experiments to promote sustainable road safety. VRSAs perform road safety audits using driving simulators (DSs), and all objects in the road environment cannot be experimental variables because of realistic constraints. Therefore, the study evaluates the likelihood of recommendation of VRSA experimental variables by comparing DSs experiments and field reviews to secure sustainable road safety conditions. The net promoter score results evaluated “Tunnel”, “Bridge”, “Underpass”, “Footbridge”, “Traffic island”, “Sign”, “Lane”, “Road marking”, “Traffic light”, “Median barrier”, “Road furniture”, and “Traffic condition” as recommended variables. On the contrary, the “Road pavement”, “Drainage”, “Lighting”, “Vehicle”, “Pedestrian”, “Bicycle”, “Accident”, and “Hazard event” variables were not recommended. The study can be used for decision making in VRSA scenario development as an initial effort to evaluate its experimental variables.

scholarly journals The Limestone as a Materials Combination of Base Course on the Road Pavement

2021 ◽  
Vol 1125 (1) ◽  
pp. 012019
Author(s):  
Yosef Cahyo Setianto Poernomo ◽  
Sigit Winarto ◽  
Zendy Bima Mahardana ◽  
Dwifi Aprillia Karisma ◽  
Rekso Ajiono
Keyword(s):  
The Road ◽  
Road Pavement ◽  
Base Course ◽  
On The Road

CERTAIN SOCIO-PSYCHOLOGICAL ASPECTS OF THE EFFECTIVENESS OF EDUCATION AND PROPAGANDA SAFE BEHAVIOR ON THE ROAD

2021 ◽  
pp. 107-110
Author(s):  
О.О. Марокко
Keyword(s):  
Road Safety ◽  
Life Support ◽  
Psychological Aspects ◽  
Life Support System ◽  
Entire Life ◽  
The Road ◽  
The Subject ◽  
On The Road ◽  
Social Advertising ◽  
The Relationship

В статье рассматриваются некоторые социально-психологические аспекты повышения эффективности социальной рекламы в области безопасности дорожного движения. Автором отмечено, что для достижения цели субъект пропаганды дол- жен осознать взаимосвязь между его индивидуальным поведением на дороге и надежностью всей системы жизнеобеспечения. The article discuses some of the socio-psychological aspects of increasing of social advertising in the field of road safety. The author notes that in order to achieve the goal, the subject of propaganda must aware of the relationship between his individual behavior on the road and the reliability of the entire life support system.

CHILDREN ROAD SAFETY AWARENESS: DESIGN AND DEVELOPMENT OF A ROAD SAFETY APPLICATION

2015 ◽  
Vol 77 (29) ◽  
Author(s):  
Nassiriah Shaari ◽  
Aeni Zuhana Saidin ◽  
Asmidah Alwi
Keyword(s):  
Road Safety ◽  
Web Application ◽  
Interactive Multimedia ◽  
Road Accidents ◽  
Design And Development ◽  
The Road ◽  
Usability Test ◽  
Safety Awareness ◽  
Safety Application ◽  
On The Road

Road safety campaigns and programs have been extensively introduced and implemented in Malaysia. However, their effectiveness is still being debated. Children especially will become the unfortunate victims of road accidents if they are unaware of the danger and precaution actions to be safe on the road. In response to that, this paper introduces an application as an alternative that inculcates road safety awareness to further support existing related programs and campaigns. Particularly, an interactive web application incorporating interactive multimedia elements has been designed and evaluated. Results on the usability test indicate a promising success and highlight aspects and issues that can be further focused for improvement and enhancement. 

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