Transactions on Transport Sciences, 2010 (vol. 3), issue 3

The Context of Transport in the Concept of the Syndromes of Global Change

K. Neubergová

Transactions on Transport Sciences 2010, 3(3):93-98 | DOI: 10.2478/v10158-010-0013-1

This contribution aims at outlining the relatively new approach towards the issue of the global changes assessment. Firstly the Concept of the syndromes of global change is presented. This Concept brought a new view to the human-made impacts assessment. The second part of this paper discusses the role of transport in the constituent elements of this Concept. Transport plays an overriding role in development syndromes, primarily in the Urban Sprawl Syndrome.

Interaction between Cyclist and Car during Broadside and Confrontation with Pedestrian Throw Formulas - Multibody Simulation

O. Fanta, K. Jelen, H. Purš

Transactions on Transport Sciences 2010, 3(3):99-106 | DOI: 10.2478/v10158-010-0014-0

Although the issue of the injury of a cyclist in car collision is in lower when compared to that of pedestrians, we cannot ignore it completely. There is an increasing need to pay attention to bicycle safety due to the growing popularity of motorless single-track vehicles. This study investigates whether it is appropriate to analyze cyclist accidents using relations describing pedestrian throws and whether using simulation software Madymo models the side-impact collision caused by cars. This paper also describes how significant the form of the front parts of normal cars are, as well as the position of the cyclist on three types of bicycles. The analysis...

Decarbonisation of Transport and Modal Split

Antonín Peltrám, Josef Domácí

Transactions on Transport Sciences 2010, 3(3):107-114 | DOI: 10.2478/v10158-010-0015-z

A predominant section of world experts, policy-makers and the general public are concerned with the danger of climate change caused by great volumes of emissions which are potentially growing. These emissions are connected with the predicted growth of sectors of the economy with a high level of emissions (namely carbon dioxide). The European Union has organised a huge effort in science, research and development to decrease emissions based on the last frame programmes of R&D&I; joint technological initiatives with relevant sectors of the industry; legal groundwork, especially in road transport; incentives to markedly diminish the present 22%...

Proposal for a Wheel Suspension Mechanism with Controlled Characteristics

Jan Kovanda

Transactions on Transport Sciences 2010, 3(3):115-120 | DOI: 10.2478/v10158-010-0016-y

This article presents the design of an overconstrained suspension mechanism based on five-link suspension. The system contains kinematic joints with a simple on-off control system, which enables it to change the kinematic scheme and, consequently, the suspension characteristics (the longitudinal and lateral movement of the wheel centre point, steering angle, camber and caster angle, etc.). A wheel suspension mechanism with controlled characteristics enables the adaption of suspension behavior according to the driving situation and an optimization of the vehicle dynamics, handling and comfort.

Traffic Conflict Techniques in the Czech Republic

Josef Kocourek

Transactions on Transport Sciences 2010, 3(3):121-128 | DOI: 10.2478/V10158-010-0017-X

This article deals mainly with defining a way of monitoring traffic conflicts. This issue is only one part of a greater safety analysis, or risk determination process for a particular location. Based on the described procedures it is possible to apply the methodology also to more complicated nodes, such as level crossings, sections of towns, residential areas, or rural areas. After the survey and the collection of a necessary amount of transport and engineering data, the determination of a relative number for the "almostaccident rate" (number of calculated vehicles for a selected time period and the number of traffic conflicts - so-called almost-accidents)...

Modeling Traffic Information using Bayesian Networks

W.P. van den Haak, L.J.M Rothkrantz, P. Wiggers, B.M.R. Heijligers, T. Bakri, D. Vukovic

Transactions on Transport Sciences 2010, 3(3):129-136 | DOI: 10.2478/v10158-010-0018-09

Dutch freeways suffer from severe congestion during rush hours or incidents. Traffic congestion increases travel time, resulting in a delay for travelers. To avoid these delays, rerouting traffic around congested areas is an option. Reliable travel time predictions are essential for dynamic routing and travel information. Travel time can be calculated from vehicle speed measurements (van Lint, 2004). These speed measurements are acquired from dual inductive loop detectors collected by the Dutch Monitoring Casco (MONICA) data system. In this paper, the predictability of average vehicle speed by Bayesian Networks is investigated in a case study. We propose...

Usage of Scanning Electron Microscopy for Particulate Matter Sources Identification

Roman Ličbinský, Aleš Frýbort, Jiří Huzlík, Vladimír Adamec, Karel Effenberger, Pavel Mikuška, Martin Vojtěšek, Kamil Křůmal

Transactions on Transport Sciences 2010, 3(3):137-144 | DOI: 10.2478/v10158-010-0019-8

Particulate matter (PM) diameter and shape are the most discussed physical properties considering behaviour characterisation, source identification, and possible effects on human health. Some groups of particles not only have a typical chemical composition but also a specific shape reflecting the method of their formation, so it is possible to deduce the source. A scanning electron microscope VEGA TS 5136 LSU (Tescan, s.r.o., Czech Republic) was used for PM imaging. PM air samples were captured on Millipore special filters made of polycarbonate membrane (Isopore) with a 0.6 µm size of pores. PM samples were taken both from near the exhaust of...

Technical Notes on Participation on the Balloting Process of ASTM International

Karel Pospíšil

Transactions on Transport Sciences 2010, 3(3):145-146

The Technical Note informs about selected problems solved by ASTM International, what an author considers interesting from his point of view. Comprehensive information about ASTM International can be obtained from their website www.astm.org.