Transactions on Transport Sciences, 2009 (vol. 2), issue 3
Application of Spatial Mobility Research as a Tool for Site Planning on a Micro-Regional Level
Transactions on Transport Sciences 2009, 2(3):86-93 | DOI: 10.5507/tots.2009.013
Spatial mobility research on a micro-regional and sub-regional level represents a strong tool for transport planning allowing flexible and effective reaction to the transport needs of citizens. This article deals with the methodologies of the implementation of spatial mobility research on a municipal level (municipalities and city districts) and the options of using the results for regional development needs. Untraditionally the main emphasis is not on the central metropolitan regions but rather on the contrary, on the rural areas where the principal factor to be focused on is not smooth traffic, but the accessibility of all places. This factor is...
Evaluation of the Complex Modulus of Asphalt Mixes
O. Vacín, P. Bošek
Transactions on Transport Sciences 2009, 2(3):94-99 | DOI: 10.5507/tots.2009.014
The objective of this paper is to evaluate uniaxial loadings in compression for selected asphalt concretes. Cylindrical specimens were subjected to sinusoidal stresses at given frequencies and temperatures. The methodology of the test is discussed and a comparison is made between non-destructive indirect tensile testing and cyclic loading. The findings show that correlations can be made between these two methods.
Air Rail Links and Risk Analysis of Prague Airport Project
L. Bína, P. Moos, O. Pastor
Transactions on Transport Sciences 2009, 2(3):100-113 | DOI: 10.5507/tots.2009.015
This paper describes the problems related to the integration of air and railway transport, which require building railway connections to hub airports, especially networks of long distance railways and high-speed tracks that link large cities with airport terminals. It presents and analyzes some solutions that have been implemented in Europe and focuses on a similar project which is currently being prepared in the Czech Republic at the dynamically growing international airport in Prague. For the final decision making process concerning the possibilities of a rail connection between Prague city and its airport a comprehensive comparative study, including...
Six-Year-Old Child Model in Frontal Sled Test
H. Čechová, L. Hynčík
Transactions on Transport Sciences 2009, 2(3):114-121 | DOI: 10.5507/tots.2009.016
This paper deals with a demonstration of a six-year-old child model. The model, called Bobby, belongs to a family of human rigid body models, Robby, and was created within the computational environment of the PAM system. First of all, Bobby is updated, the geometry and material properties of the original model are improved, and, in particular, joints, including their characteristics, are redefined. The updated model is tested in a sled test environment. Due to lack of experimental data with child cadavers, the test is compared to an experiment with the six-year-old Anthropomorphic Test Device, published in available literature sources.
Detection of Steel Bars in Concrete by Impact-Echo
Z. Hlaváč, O. Anton, A. Garbacz
Transactions on Transport Sciences 2009, 2(3):122-127 | DOI: 10.5507/tots.2009.017
Due to the impact-echo defectoscopy tests of a massive block of underreinforced concrete steel bars of diameter 22 and 32 mm were detected. This fact is described in the paragraph, and results are provided through a visualization of b-scanning. The effect of a concrete cover layer and of the reinforcement diameter is clear on the sensitivity of the method. Because of various parameters of the reinforcement, impactors of a different ball diameter were employed. With a ball of diameter 12 mm, 8 mm and 5 mm reinforcement at the depth of about 50 to 60 mm was detected.
J. Obermann, J. Kovanda
Transactions on Transport Sciences 2009, 2(3):128-133 | DOI: 10.5507/tots.2009.018
Driving maneuvers are described that may reduce collision consequences or that can prevent collision, in this case, with the vulnerable road user - the pedestrian. For such a level of collision prevention, some intelligent system is needed. A simple, builtin near infra red night-vision system for vehicles is described, along with results of the tests focusing on increasing the visibility of a pedestrian.
Study of the Temperature and Acoustic Emission Characteristics of the Concrete Hardening Process with Different Ways of Curing
L. Topolář, L. Pazdera, V. Bílek, J. Smutný
Transactions on Transport Sciences 2009, 2(3):134-139 | DOI: 10.5507/tots.2009.019
Concrete is a basic building material. This article describes its properties. Microcracks result from volume changes in concrete. The intensity of temperature development and the way concrete is being cured have a significant influence on the emergence of microcracks. Indeed, the quantification of microcracks isn't simple. Using acoustic emissions it is possible to observe the evolution of scratches in hardening concrete - how many of them evolve and how the intensity of their emergence changes depending on different regimes of curing or different types of concrete (different cement batches, various additives and admixtures, etc.).
Technical Notes on Participation on balloting process of ASTM International
Transactions on Transport Sciences 2009, 2(3):140-141 | DOI: 10.5507/tots.2009.020
Information about ASTM International can be obtained form their website www.astm.org.