EPFW 2019: Harmonising pavement skid resistance measurements

Organised by the Environment, Planning, Safety and Eco-design Laboratory (EASE), the second European Pavement Friction Workshop will take place from 20 to 24 May at the IFSTTAR site in Bouguenais, near Nantes. Researchers and engineers will use test tracks in order to harmonise the results from skid resistance measurement devices.

In view of the wide variety of measuring devices and the differences in the values they provide, obtaining an accurate picture of the skid resistance of their roads or airport runways presents difficulties for infrastructure managers. This is the essence of the pavement surfacing skid resistance measurement problem. To overcome it, engineers, researchers and network managers from all over the world (Europe, Japan, Russia, the USA...) are invited to take part in the second European Pavement Friction Workshop (EPFW). The event is to be held in Bouguenais from May 20 to 24 and will be organised by the Environment, Planning, Safety and Eco-design Laboratory (EASE)*.  The workshop "will test devices and collect data to estimate measurement uncertainties and link each device to a single skid resistance indicator, the EFI (European Friction Index), developed as part of the European RESANNE project" explains Veronique Cerezo, the Director of the EASE Laboratory. The goal is to improve the ability of operators to interpret the results from measurement devices and thus make sure optimal pavement skid resistance is achieved, which is essential to avoid long braking distances or road departures.

After calibration and checking of the devices, the tests will take place over two days, on Tuesday 21 and Wednesday 22 May. About fifteen devices will be tested on the IFSTTAR reference and road test track. "We have more than a dozen pavement surfacings that cover the full range of skid resistance values, from conventional pavements, such as very thin or semi-coarse asphaltic concrete, to custom-made pavements (resin, double surface dressing, smooth paint...) for testing extreme skid resistance values." The collected data will also be used to improve researchers' recommendations for the maintenance of sensors and measuring equipment and the replacement of wearing courses, etc. The last two days of the event will be organised around lectures and about twenty scientific presentations on advances and innovations with regard to measuring devices, methods for measuring the textures of pavement surfacings and modelling friction.... "The EPFW is also a forum for interaction between consulting firms, scientists, operators, manufacturers, etc."  the director of the EASE laboratory explains. The scientific presentations will cover topics such as the effect of seasonal variations on skid resistance, systems for characterizing skid resistance on airport runways, modelling how traffic modifies skid resistance, etc. The best presentations will be published in the International Journal of Pavement Engineering (IJPE).

* with the support of the following companies: SHIMA, IWS Messtechnik, Nippo Sangyo and Next Road Engineering.

For the programme and registration visit  friction.sciencesconf.org