Author:Skinner, DGDate:Feb 1994The available data bases for accidents, road geometry (photolog output) and traffic counts were combined and the accident rates determined for two lane, four lane and six lane road categories as well as for 22 geometric element categories. ...Read more
Author:Paige-Green, P; Coetzer, K; Lea, J; Semmelink, CDate:17 Jun 2009The use of locally materials in low volume rural roads can result in significant cost savings. However, this is associated with an increased risk of premature distress or failure. A compromise needs to be found between the probability of ...Read more
Author:Kennedy, DADate:Jan 1991Relationships of speed vs density, volume and percentage loop occupation are investigated. The effect of differing directional splits in traffic volumes is also examined. A method of determining the Level-of Service of two-lane roads in terms ...Read more
Author:Sanders, PJ; De Beer, Morris; du Plessis, HWDate:26 May 2009Various aspects of the determinations and use of elastic moduli of pavements materials are herein addressed. Included is an investigation into the sensitivity of pavement life to changes in elastic material parameters, an update of moduli ...Read more
Author:Prozzi, JA; Sanders, PJ; du Toit, GD; De Beer, MorrisDate:26 May 2009This report describes a new methodology for the determination of Equivalent Damage Factors (EDFs) of vehicles with multiple axle and wheel configurations on pavements. The basic premise of this new procedure is that "equivalent pavement ...Read more
Author:Division of Roads and Transport Technology CSIR; Jordaan & Joubert Inc.Date:Mar 1993The purpose of this manual is to provide guidelines on the upgrading of gravel low volume roads to roads and maintenance personnel of road authorities of all sizes. Low volume is, for the purpose of this document, defined to be less than 500 ...Read more
Author:Schutte, IC; Williams, CJ; Wood, DBDate:26 May 2009Decisions involving road infrastructure investment inevitably are based on various assumptions. This means that risk is inherent in these decisions. It is essential that this risk should be incorporated in the evalution process. This will ...Read more
Author:Opperman, RA; Upton, AHDate:26 May 2009The purpose of this manual is to provide a practical and easy-to-use method for identifying and prioritising hazardous locations in a given area, and to provide guidelines for establishing the most cost-effective remedial measure for a specific ...Read more
Author:Van Der Merwe, CJDate:Sep 1993The report describes the findings of the research project on subsurface drainage. The need for drainage was quantified by evaluating HVS tests on wet pavements. Geotextiles were investigated and various tests performed. Soil/geotextile ...Read more
Author:Paige-Green, P; Coetser, KDate:17 Jun 2009This report discusses the use of certain proprietary soil stabilisers in low volume roads in South Africa. Although ionic soil stabilisers have been in use for many years, they have not been marketed to their fullest potential and in many ...Read more
Author:Semmelink, CJDate:26 May 2009This report briefly discusses the theoretical background of the K-mould, its development and the results obtained with it on a number of untreated road building materials.Read more