Mapping Road Safety Barriers Across Street View Image Sequences

2021 ◽  
Author(s):  
Md Mostafijur Rahman ◽  
Arpan Man Sainju ◽  
Da Yan ◽  
Zhe Jiang
Keyword(s):  
Road Safety ◽  
Image Sequences ◽  
Street View ◽  
Safety Barriers

Removal of Moving Objects from a Street-View Image by Fusing Multiple Image Sequences

2010 ◽  
Author(s):  
Hiroyuki Uchiyama ◽  
Daisuke Deguchi ◽  
Tomokazu Takahashi ◽  
Ichiro Ide ◽  
Hiroshi Murase
Keyword(s):  
Moving Objects ◽  
Image Sequences ◽  
Multiple Image ◽  
Street View

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

2019 ◽  
Vol 262 ◽  
pp. 10001 ◽  
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.

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

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.

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

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.

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

2020 ◽  
Vol 21 (1) ◽  
pp. 65-81 ◽  
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.

Study of a W-Beam Guardrail Behaviour in Road Safety Barriers

2014 ◽  
Vol 1016 ◽  
pp. 54-58
Author(s):  
Nuno Peixinho ◽  
João Tavares ◽  
José Meireles
Keyword(s):  
Numerical Simulation ◽  
Experimental Study ◽  
Road Safety ◽  
Experimental Results ◽  
Safety Barriers ◽  
Plastic Domain ◽  
Plastic Displacement ◽  
Force Displacement ◽  
Ansys Workbench

This study presents results regarding a numerical simulation of the plastic displacement of a road guardrail. An experimental study of two different guardrails was conducted in order to collect information regarding displacement due to a determined force behavior. These tests were then simulated in Ansys Workbench to recreate the elastic and plastic domain of the material. The guardrails are two meters long, supported by two simple cylinders while being pressed at the center by a third one. In order to explore the software two different mesh sizes were used to compare their efficiency, being concluded with the comparison between the force-displacement curves of numerical and experimental results.

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