Articles in Taxonomy

Skid resistance measurements with the SRT – Information leaflet A57

BRRC has a static device for measuring skid resistance in places where conventional skid resistance measurements with measuring vehicles are impossible, such as footways, driveways, industrial floors, road markings, shopping streets, entrance halls, etc. It is the Skid Resistance Tester of the British Transport Research Laboratory (TRL), shortly referred to as SRT by professionals.
BRRC’s information leaflet A57 decribes the device and its applications.

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Passively safe support structures for road equipment

A little less than 40 % of all road fatalities result from collisions with roadside obstacles. Collisions with such isolated obstacles are about twice as lethal as on average and cause 1.6 times more serious injuries as on average. Natural obstacles (such as trees) are by far the largest group. Additionally, considerable numbers of lives are lost in collisions with lighting columns and other road equipment.
Collisions with lighting columns and other robust support structures account for slightly less than 10 % of the total number of road deaths. Yet for lighting columns and for sign or signal poles there are alternatives that are not inferior in functionality to conventional rigid structures. This makes a major difference for the occupants of a passenger car running into such a support structure.

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Road Equipment Commission (REC-E226)

The publication of the European Construction Product Directive in 1989 marked the beginning of the gradual introduction of European standardization. European standards are to replace existing Belgian standards, or at least require them to be thoroughly revised. By affixing a CE mark, the manufacturer declares that the performance characteristics of his product have been determined by the appropriate European standard and that measures have been taken for the product to continue meeting these declared characteristics.

As the actors in the road equipment branch were concerned about the impact of this European standardization, a steering committee on European standardization in the road equipment branch was formed at BRRC in the spring of 2003. The first task of this committee was to increase the awareness of, and disseminate information to, the various actors in the field: road authorities, manufacturers, specialized institutions, etc. For that purpose, a series of thematic sessions on the standardization and CE marking of road equipment was held in March 2004.

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BRRC as a sectoral operator for CEN/TCs 226 Road equipment, 227 Road materials and 396 Earthworks

Le 20 mars 2007, le conseil d’administration du Bureau de Normalisation (NBN) a reconnu notre centre de recherche en tant qu’opérateur sectoriel pour les comités techniques européens CEN/TC226 Equipements de la route et CEN/TC227 Matériaux routiers.

Fin 2009, le CRR, conjointement avec le CSTC, a été accepté en tant qu’opérateur sectoriel pour le tout nouveau CEN/TC396 Terrassements.

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Measurement of the daytime visibility of road markings

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The result of this measurement, daytime visibility, is the luminous intensity from a surface unit of sampled road marking, as perceived by a motorist from a distance of 30 m; it is expressed per unit of illumination of the marking under diffuse lighting conditions. Diffuse lighting can be compared to natural lighting under a clouded sky, or street lighting at night. Daytime visibility is expressed in mcd lx-1 m-2. Typical values for the daytime visibility of new white markings range between 100 and 200 mcd lx-1 m-2. On concrete, which is lighter in colour, usually a higher initial value is required than on asphalt, since not only absolute daytime visibility is important, but also the contrast of the marking with the surrounding road surface. The measuring apparatus available at BRRC is a Qd30 instrument of the DELTA company; it is described in more detail in BRRC’s information leaflet F56.

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