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Browsing by Subject "Heavy vehicles"

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An appraisal of mass differences between individual tyres, axles and axle groups of a selection of heavy vehicles in South Africa

Author: De Beer, Morris ; Sallie, Ismail M Date: Jun 2012 In road design, accurate quantification of traffic loading remains a challenge. Research in South Africa with the Stress-In-Motion (SIM) system has concentrated on interaction forces between slow-moving tyres and the textured SIM device. A ... Read more
Assessing the roll stability of heavy vehicles in South Africa

Author: Benade, R ; Berman, RJ ; Kienhöfer, F ; Nordengen, Paul A Date: Jul 2016 In South Africa there are approximately 12.5 truck-crash-related fatalities per 100 million kilometres travelled. This is between 4 and 10 times higher than a number of European countries such as Denmark, France, Germany and Switzerland and ... Read more
Cost estimation of road wear due to heavy vehicles on the Namibian paved network

Author: Kemp, Lana ; Nordengen, Paul A ; Steenkamp, Anton J ; Ithana, T Date: Oct 2018 This paper presents the results of a newly-developed methodology that quantifies the road wear caused by heavy vehicles on the Namibian paved road network in terms of equivalent standard axles and a monetary value. This was achieved by ... Read more
The development and evaluation of a performance-based standards approach for regulating the use of heavy vehicles in South Africa

Author: Nordengen, Paul A Date: Dec 2013 The aim of this research was to apply, refine and demonstrate an alternative approach to the design and operation of heavy vehicles in South Africa with improved outcomes in terms of road transport productivity, vehicle safety performance, ... Read more
Development of an overload control strategy for the Republic of Senegal

Author: Nordengen, Paul A ; Coetzee, S ; Roux, Michael P ; Adolehoume, AP Date: Sep 2006 The Republic of Senegal has approximately 15 000 km of roads of which 4 300 km are paved. Senegal’s road network is considered to be one of the best in West Africa. One of the threats to the Senegal road network is overloaded heavy vehicles, ... Read more
Heavy vehicle dynamic road wear from a rigid heavy vehicle when including road crossfall

Author: Steenkamp, Anton J ; Kienhofer, F ; De Saxe, CC Date: Sep 2021 Previous research investigating the dynamic road wear produced by heavy vehicles has not included the effect of road crossfall. This study shows that road crossfall, even at values as low as 1%, has a significant effect on the predicted dynamic ... Read more
Improving the road wear performance of heavy vehicles in South Africa using a performance-based standards approach

Author: Nordengen, Paul A Date: May 2010 In most countries throughout the world, heavy vehicle use on the road network is controlled predominantly by prescriptive regulations. These regulations, in many cases, differ significantly from one country to another. Efforts in various parts ... Read more
Initiative to introduce a performance-based standards (PBS) approach for heavy vehicle design and operations in South Africa

Author: Nordengen, Paul A ; Prem, H ; Mai, L Date: May 2008 The introduction of PBS for heavy vehicles in South Africa was first identified in the National Overload Control Strategy as a potential concession of a proposed Self-regulation initiative. In August 2004 a PBS committee was established to ... Read more
A methodology for assessment of road structures for the PBS pilot project in South Africa

Author: Nordengen, Paul A ; Steenkamp, Anton J Date: Nov 2016 This paper describes the methodology that is being used for the performance assessment of PBS vehicles in terms of road structures as part of the PBS pilot project in South Africa. The assessment approach has evolved from the standard “bridge ... Read more
Methodology for estimating the road wear cost of heavy vehicles on a road network

Author: Kemp, Lana ; Steenkamp, Anton J ; Nordengen, Paul A Date: Oct 2018 Heavy vehicle traffic volumes continue to increase globally, causing the accelerated deterioration of pavement structures. This paper introduces an innovative methodology that quantifies road consumption attributed to heavy vehicles on a paved ... Read more
Monitoring results of PBS vehicles in South Africa in terms of productivity, safety and road wear performance

Author: Nordengen, Paul A Date: Jul 2013 As part of a Performance-Based Standards (PBS) research programme for heavy vehicles in South Africa, a need was identified to design, manufacture and operate a number of PBS or Smart Truck demonstration vehicles in order to gain practical ... Read more
Monitoring results of two PBS demonstration vehicles in the forestry industry in South Africa

Author: Nordengen, Paul A Date: Mar 2010 As part of a Performance-Based Standards (PBS) research programme for heavy vehicles in South Africa, a need was identified to design, manufacture and operate a number of PBS demonstration vehicles in order to gain practical experience in the ... Read more
Overload road damage model

Author: Roux, Michael P ; Sallie, Ismail M ; Nordengen, Paul A ; Ras, H ; De Franca, Volanda MP Date: Mar 2005 Not only do overloaded vehicles pose an increased safety risk on the road (reduced stability and braking efficiency etc.), but they also accelerate the rate of deterioration of the road network and increase road maintenance costs, which in ... Read more
Pavement damaging effects from dual tyre configurations of heavy vehicles with tyre inflation pressure differentials

Author: De Beer, Morris ; Van Rensburg, Yvette Date: 16 Aug 2015 Recently, analyses on Stress-in-Motion (SIM) data of heavy vehicles (HVs) from National Road 3 (N3) indicated that there are un-equal loading on dual tyre configurations. It was shown that the mass of approximately 70 percent of the outside ... Read more
Pavement damaging effects from dual tyre configurations of heavy vehicles with tyre inflation pressure differentials

Author: De Beer, Morris ; Van Rensburg, Yvette Date: Aug 2015 Recently, analyses on Stress-in-Motion (SIM) data of heavy vehicles (HVs) from National Road 3 (N3) indicated that there are un-equal loading on dual tyre configurations. It was shown that the mass of approximately 70 percent of the outside ... Read more
Performance based standards: A sustainable solution for transportation in South Africa

Author: Berman, R ; Benade, R Date: Dec 2015 The costs of logistics in South Africa are dominated by high transportation and fuel costs which are ultimately carried by consumers. An alternative regulatory framework for governing heavy vehicles is explored as a means to not only decrease ... Read more
Road transport management system: a self regulation initiative to promote load optimisation, vehicle maintenance and driver wellness in heavy vehicle transport in South Africa

Author: Nordengen, Paul A Date: Apr 2008 Heavy vehicle overloading and road safety continue to be major problems on South African roads despite efforts at more effective enforcement by the road and traffic authorities. Overloading causes premature road deterioration and, together ... Read more
Self regulation initiative in heavy vehicle transport to address road safety, accelerated road deterioration and transport productivity in South Africa

Author: Nordengen, Paul A ; Oberholtzer, F Date: Jun 2006 Heavy vehicle overloading and road safety continue to be major problems in South Africa notwithstanding efforts at more effective enforcement by the road and traffic authorities. Overloading causes premature road deterioration and, together ... Read more
South African performance based standards (PBS) vehicle to transport steel pipes

Author: Dessein, T ; Kienhöfer, F ; Nordengen, Paul A Date: Mar 2010 The preliminary design of a South African PBS vehicle to transport large-bore welded steel pipes is an important milestone in developing local expertise to analyse PBS designs. The design approach has drawn extensively from the PBS measures ... Read more
Using Gaussian process machine learning to predict dynamic road wear of a rigid heavy vehicle

Author: Steenkamp, Anton J ; Steenkamp, Andries L Date: Jul 2022 The paved road network is a critical asset to any economy. South Africa has a paved road network that has an estimated value above R2 trillion. This asset is however under threat as there was a backlog in maintenance of more than R416.6 billion ... Read more

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