Improvement of road safety on rural roads by using suitable safety barriers

The results of lengthy thorough investigations into traffic safety situation show that the percentage of pedestrians getting involved in road traffic accidents on Lithuanian roads is significantly higher (more than 33 % of the total number of injury and fatal accidents) than that compared to the other European Union member-states. The article studies traffic safety problems and their factors causing the largest influence on the occurrence of these accidents. Considering valuable experience gained by foreign countries, investigation was carried out to establish general and main factors causing insufficient road safety conditions and significance of these factors to road safety. The article also shows the main activity improving road safety in Lithuania and discusses the effectiveness of strategic and local (temporary and long term) measures to improve conditions for pedestrian road safety.

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On the validation of the LS-DYNA Geo Metro numerical model

MATEC Web of Conferences ◽

10.1051/matecconf/201926210001 ◽

2019 ◽

Vol 262 ◽

pp. 10001 ◽

Cited By ~ 4

Author(s):

Dawid Bruski ◽

Stanisław Burzyński ◽

Jacek Chróścielewski ◽

Łukasz Pachocki ◽

Wojciech Witkowski

Keyword(s):

Finite Element ◽

Numerical Model ◽

Road Safety ◽

Finite Element Code ◽

Numerical Tests ◽

Safety Barriers ◽

The Subject ◽

Crash Tests

The paper presents experiences gained during work with numerical model of Geo Metro vehicle used for simulations of crash tests with road safety barriers. Attention is drawn to the subject of tire/wheel breakage during collision events. Some methods for improvement of the model are presented in the paper. Several results for the normative vehicle numerical tests are introduced. Simulations were carried out using LS-DYNA finite element code with solver version R8.1.

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The influence of position of the post or its absence on the performance of the cable barrier system

MATEC Web of Conferences ◽

10.1051/matecconf/201821902012 ◽

2018 ◽

Vol 219 ◽

pp. 02012

Author(s):

Dawid Bruski ◽

Stanisław Burzyński ◽

Jacek Chróścielewski ◽

Łukasz Pachocki ◽

Krzysztof Wilde ◽

...

Keyword(s):

Numerical Simulations ◽

Road Safety ◽

Numerical Study ◽

Full Scale ◽

The Road ◽

Safety Barriers ◽

Study Results ◽

Crash Tests

Road safety barriers are used to increase safety in potentially dangerous places on the roads. They are designed and installed on the roads to prevent any vehicle from getting outside the travelled way or from entering the opposite lane of the road. Barriers, which are used on European roads, have to undergo full scale crash tests according to the EN 1317 standards. Nowadays as a supplement to real crash tests, numerical simulations are commonly used. The work concerns the influence of position of the post or its absence on the crashworthiness of the cable barrier based on numerical study results.

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Modelling and Simulation of Crash Tests on Curved Barriers Taking into Account Vehicle Speed Limits

The Baltic Journal of Road and Bridge Engineering ◽

10.7250/bjrbe.2019-14.445 ◽

2019 ◽

Vol 14 (3) ◽

pp. 304-325

Author(s):

Marian Klasztorny ◽

Daniel Bronislaw Nycz ◽

Kamil Pawel Zajac

Keyword(s):

Numerical Modelling ◽

Traffic Safety ◽

Road Safety ◽

Road Traffic ◽

Modelling And Simulation ◽

Small Radius ◽

Vehicle Speed ◽

Road Traffic Safety ◽

Safety Barriers ◽

Crash Tests

The reliable speed of a vehicle, assigned to a given road arc, is not usually taken into account in simulation of crash tests on road safety barriers located on horizontal concave arcs with small radii (20−200 m). In this work, the numerical modelling and simulations of TB11, TB32 crash tests for selected road safety barriers on a horizontal concave arc with a small radius of 150 m, at a reliable and increased speed of a vehicle, were conducted. The authors developed the methodology of numerical modelling and simulation and published in the period 2015−2018. In this study, crash tests include two N2 class steel road barriers with the B-type guide rail, i.e. SP-05/1 (with 1.00 m post spacing) and SP-05/2 (with 2.00 m post spacing). Suzuki Swift and Dodge Neon vehicle models were taken from the National Crash Analysis Center (USA) library and modified, respectively. It was proved that road traffic safety on horizontal concave arcs with small radii is assured if the reliable velocity is not exceeded by drivers. Compacting the post spacing or the uses of a composite-foam protective overlay added to guide rails are not recommended.

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Numerical Analysis of TB32 Crash Tests for 4-cable Guardrail Barrier System Installed on the Horizontal Convex Curves of Road

International Journal of Nonlinear Sciences and Numerical Simulation ◽

10.1515/ijnsns-2018-0169 ◽

2020 ◽

Vol 21 (1) ◽

pp. 65-81 ◽

Cited By ~ 1

Author(s):

Krzysztof Wilde ◽

Dawid Bruski ◽

Marcin Budzyński ◽

Stanisław Burzyński ◽

Jacek Chróścielewski ◽

...

Keyword(s):

Numerical Analysis ◽

Numerical Simulations ◽

Road Safety ◽

Road Accidents ◽

Road Infrastructure ◽

The Road ◽

Horizontal Curves ◽

Convex Curves ◽

Safety Barriers ◽

Crash Tests

AbstractHorizontal curves are one of the elements of road infrastructure where statistically a relatively high number of accidents have been reported. In the last 10 years in Poland, approximately 10% of all road accidents happened on horizontal curves of roads and was responsible for approximately 14% of all fatalities on Polish roads. Thus, this issue is important and requires extensive research and proper road safety treatments. One possible measure that may contribute to improvement of safety on road curves may be barriers. The purpose of this work is to assess, with use of numerical simulations, the performance of the 4-cable barrier systems installed on horizontal road convex curves. The most important parameters for road safety barriers are presented including the effect of various impact velocities and the radiuses of the road curves.

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