scholarly journals Selected Problems of Transport in Port Towns – Tri-City as an Example

2017 ◽  
Vol 24 (s1) ◽  
pp. 16-24 ◽  
Author(s):  
Marcin Budzyński ◽  
Dawid Ryś ◽  
Wojciech Kustra
Keyword(s):  
Traffic Safety ◽  
Road Traffic ◽  
Point Of View ◽  
Road Surface ◽  
Air Transport ◽  
Transport Systems ◽  
Sea Transport ◽  
The Road ◽  
Road Traffic Safety ◽  
Transport Problems

Abstract Port towns are strategic places from the point of view of transport systems. They form integration junctions for various transport branches , apart from the traditional - road and railway ones , also for water( sea) transport which is active there. Moreover, air transport comes also into consideration , whose efficient functioning must be connected with good accessibility, that concerns sea transport as well. Efficient and safe servicing the ports is crucial for their functioning. Problems associated with the overloading of lorries, which leads to degradation of road surface structure , observed in Gdynia, are discussed as an example in this paper. Problems of road traffic safety (RTS) are presented in this paper on the example of Gdańsk. The two issues: the road traffic safety and road surface degradation constitute only some transport problems of port towns , but they are very important, from the point of view of their specificity, for integration junctions of all the transport branches for people and goods. However, in discussing selected aspects of transport in port towns it is necessary to refer to the managing of integrated transport system with taking into account its traffic safety aspects.

Strength of the semitrailer’s roof in the aspect of road traffic safety

2018 ◽  
Vol 121 ◽  
pp. 285-293
Author(s):  
Mirosław Nader ◽  
Krzysztof Kielczyk
Keyword(s):  
Traffic Safety ◽  
Road Traffic ◽  
Test Methods ◽  
Point Of View ◽  
Road Vehicles ◽  
The Road ◽  
Road Traffic Safety ◽  
Road Users ◽  
Minimum Requirements ◽  
European Standards

Stable and slidable roofs of the semitrailers are usually characterized by low weight and easy handling, which equals directly into comfort of use, longevity of the system and the time needed to open or close. However, not always an operational advantages of roofs go hand in hand with their durability, especially in the snowfall situation or sudden changes of the road lane by a set of vehicles: a truck tractor – a semitrailer. The analysis of homologation regulations shows that today there are no precise requirements and physical testing / strength methods for assembled roofs of the semitrailers as components. The test methods for complete vehicle bodies (including the roof), which have destructive nature, are described in European standards, e.g. EN 12642:2017 "Securing of cargo on road vehicles – Body structure of commercial vehicles – Minimum requirements" [6], internal German regulations, e.g. VDI 2700:2004 "Securing of loads on road vehicles" [8] or Directive DCE 9.5:2008 ”Load security for transportation of load containers on utility vehicles in road traffic” [7]. A non-destructive, possible to perform, testing method for the roof as a component - is calculation method. The results of the performed tests allow to conduct development works over improving the vehicle’s system security (including the introduction of new semitrailers roofs design solutions and verification of existing ones). The carried out strength tests give possibilities to optimize and adapt the roofs to the transported loads, e.g. stable lifting roofs used in transport of divisible loads, or sliding roofs used in the transport of non-separate loads. The strength testing of the semitrailer’s roofs is highly justified from the point of view of securing the load and safety of passengers, drivers and other road users primarily. The requirements and limitations of the mentioned testing methods are not - in the authors opinion - 100% of realistic and possible deformation during the real vehicle’s road traffic. On the other hand, the cited documents exists as recognized regulators in the international arena of the road traffic legislation. The work’s aim is demonstrating the benefits of using reinforced roofs in all types of the semitrailer’s bodyworks.

scholarly journals SCIENTIFIC APPLICATIONS OF THE AHP METHOD IN TRANSPORT PROBLEMS

2014 ◽  
Vol 29 (1) ◽  
pp. 47-54 ◽  
Author(s):  
Valentinas Podvezko ◽  
Henrikas Sivilevicius ◽  
Askoldas Podviezko
Keyword(s):  
Traffic Safety ◽  
Road Traffic ◽  
Experimental Studies ◽  
Transport Systems ◽  
Railway Transportation ◽  
Analytic Hierarchy ◽  
Road Traffic Safety ◽  
Transportation Service ◽  
Transport Problems ◽  
Hierarchy Process

In methodologies of solving different transport problems where the best decision has to be determined usually a number of chosen quantitative criteria are incorporated, which describe qualitative parameters of transport systems in quantitative terms. Often weights which reveal importance of such criteria must be evaluated. The realm of proprietary methods used in engineering sampling and experimental studies does not comprise methods of weight evaluation. Consequently, expert evaluation methods, which elicit weights of criteria from experienced, qualified and fair experts, are used. Among the most popular such methods is the method AHP (Analytic Hierarchy Process). Scientists of Vilnius Gediminas Technical University used this method for investigation of interrelationship of elements of a transport system; for evaluation of influence of the interrelationship on road traffic safety; and for evaluation of quality of passenger railway transportation service.

Review of methods applied to research of road users behaviour on pedestrian crossings

2018 ◽  
Vol 121 ◽  
pp. 431-439
Author(s):  
Anna Wytrykowska ◽  
Piotr Tomczuk
Keyword(s):  
Traffic Safety ◽  
Road Safety ◽  
Road Traffic ◽  
Technical Condition ◽  
Transport Systems ◽  
Systematic Research ◽  
Road Infrastructure ◽  
The Road ◽  
Road Traffic Safety ◽  
Road Users

Increase in the interest of road safety and threats has influenced the promotion of research conducted in this area. When conducting the analysis of hazards in road traffic, special attention should be paid to the technical condition of the vehicle, the condition of the road infrastructure, the surroundings and the accessibility of the road and the behavior of road traffic participants. Road managers have the opportunity to influence the level of road safety directly, through the modernization and reconstruction of road infrastructure. In order to select effective solutions, it is necessary to conduct systematic research on the level of road traffic safety, accident rates and the effectiveness of implemented solutions. An example of the conducted research are the analysis of traffic participants' behavior. The paper presents an overview of the methods used to study the behavior of road users. One of the presented methods was developed and used as part of the Rector's Grant in 2017 by the Scientific Circle of Electrical Engineering in Transport Systems.

scholarly journals An example of a power-off maneuver of a vehicle without a straight line motion control

2021 ◽  
Vol 58 (2) ◽  
pp. 63-80
Author(s):  
Jerzy Kisilowski ◽  
Jarosław Zalewski
Keyword(s):  
Motion Control ◽  
Traffic Safety ◽  
Motor Vehicle ◽  
Road Traffic ◽  
Maximum Amplitude ◽  
Point Of View ◽  
The Road ◽  
Road Traffic Safety ◽  
Safety Research ◽  
Straight Line

In this paper some selected results related to motor vehicle dynamics have been presented basing on the computer simulations of a sports two-seater performing a power-off straight line maneuver with different road conditions and the lack of a straight-line motion control having been included. All simulations have been performed in the MSC Ad-ams/Car environment and the adopted maneuver was performed at the instant speed of 100km∙h-1. The selected phe-nomena have therefore been observed along the road long enough to relate them to different aspects of vehicle dynam-ics and the road traffic safety research. The adopted vehicle’s model moved along the flat and the randomly uneven road with the almost similar and the almost different profiles for the left and the right wheels. Additionally, two values of the coefficient determining the maximum amplitude of road irregularities have been selected, i.e., 0.3 for the lower and 0.9 for the higher irregularities. This meant that the road conditions have been considered as one of the main factors possibly affecting disturbances of the motor vehicle’s motion. Such research seems valuable from the point of view of the road safety and the vehicles’ maintenance. A power-off straight maneuver is not very often performed during the normal road traffic and might seem useless. However, in this case it seemed essential to test the response of a vehicle’s model to such factors as, e.g., the uneven loading, suspension characteristics, etc. This in turn might prove valuable when considering, e.g., the additional con-centration of a driver to overcome the external disturbances acting on a moving vehicle. The presented research is the second part of the paper (Kisilowski, 2019) where the power-off maneuver was considered but with the straightforward motion control. Here, the straight-line control has been switched off to examine an untypical situation where, for example a driver loses consciousness, and the vehicle moves freely along the road.

scholarly journals An analysis of road pavement collapses and traffic safety hazards resulting from leaky sewers

2016 ◽  
Vol 11 (4) ◽  
pp. 251-258 ◽  
Author(s):  
Emilia Kuliczkowska
Keyword(s):  
Traffic Safety ◽  
Road Traffic ◽  
Safety Hazards ◽  
Sewer Pipes ◽  
The Road ◽  
Road Traffic Safety ◽  
Road Pavement ◽  
Linear Defects ◽  
University Of Technology ◽  
Pavement Damage

In this paper, road pavement collapses resulting from sewer leakage are divided into six categories: negligible, marginal, considerable, serious, very serious and catastrophic, with the categorization being based on two criteria, both related to traffic safety, i.e., the number of fatalities caused by sinkholes, and the extent of the road pavement damage. The causes of road pavement collapses are also discussed. The study involved analyzing the deterioration of sewer pipes with long service lives, focusing on the most common materials, i.e., concrete and vitrified clay. The results of the sewer inspections performed by the Kielce University of Technology suggest that the spot and linear defects detected in sewers of this type can be divided into three groups. The findings were used to formulate some recommendations on how to improve road traffic safety by preventing road pavement collapses.

scholarly journals Influence of Legislation on Road Traffic Safety

2012 ◽  
Vol 22 (1) ◽  
pp. 75-81
Author(s):  
Marijan Rajsman ◽  
Georg-Davor Lisicin
Keyword(s):  
Traffic Safety ◽  
Road Traffic ◽  
Prognostic Models ◽  
Legal Regulations ◽  
Improvement Strategy ◽  
Safety Level ◽  
The Road ◽  
Road Traffic Safety ◽  
The Republic ◽  
Basic Hypothesis

The objective of this paper is to analyse road traffic safety in the Republic of Croatia based on the selected indicators which were used by the legislator in bringing the Law on Road Traffic Safety which has been in force since 28 July 2004, and the achieved effects in reaching the desired safety level in the three-year period from 2005 to 2007. The aim of the research is to establish a prognostic trend of the values of the studied indicators in the time period following the enforcement of new legal regulations. Adequate safety indicator values for the respective period were analyzed using the methods of analysis and synthesis, mathematical statistics as well as trend assessment based on the found mathematical prognostic models. Based on the results of this research it was found that the basic hypothesis according to which the implementation of new legal guidelines had to result in positive change in the condition of road traffic safety, failed to be confirmed. A change in the road traffic safety improvement strategy has been proposed as well as a more significant participation and recognition of the profession and science in this field which is of great significance for the society. KEY WORDS: influence of legal regulations, road traffic safety, effects and tendencies

scholarly journals The concept of average speed measurements network in the West Pomeranian

2018 ◽  
Vol 19 (12) ◽  
pp. 238-241
Author(s):  
Katarzyna Sosik
Keyword(s):  
Traffic Safety ◽  
Road Traffic ◽  
Road Transport ◽  
Transport Systems ◽  
Intelligent Transport Systems ◽  
The West ◽  
Accident Rate ◽  
Average Speed ◽  
Intelligent Transport ◽  
Road Traffic Safety

The article presents the concept of implementing a network of average speed measurements in the West Pomeranian. The author focused on solutions of Intelligent Transport Systems to improve the safety of road transport. The first part of the article discusses the state of road traffic safety in the West Pomeranian. In the next part, the solutions of Intelligent Transport Systems used to record the speed of road vehicles and the method of data recording and processing were discussed. In the third part, the accident maps and the locations of the stored sectional speed measurements were analysed, on the basis of which the proposition of places for the implementation of the network of average speed measurements was created due to the high accident rate.

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