Our documentation branch gives documentary assistance by consulting national and international databases and granting access to our library. This library offers a tremendous collection of specialized literature, which is unique in Belgium. In addition to covering all the technical aspects of road construction it contains documents on topics such as road safety, mobility, traffic signing and environmental issues, as well as publications of a socioeconomic nature such as statistics, normative documents, etc.
The Belgian Road Research Centre has a footway profilometer to measure the longitudinal evenness of cycle tracks and other surfaces. A scooter with a trailer travels at a constant speed of 20 km/h on the surface to be surveyed. Using a laser and an accelerometer, the distance between the trailer and the road surface is recorded every 3 cm. The GPS coordinates and the distance travelled are recorded as well. From the measured longitudinal profile is possible to calculate the coefficient of evenness (for wavelengths of 0.5 m and 2.5 m) or other indicators of evenness.
Road network management is not limited to the more technical aspects of the contruction, maintenance and repair of a given number of roads. Other considerations involved in the management of a road network include the available annual budget, the share-out between road maintenance and (re)construction, the safety and comfort of road users, mobility, noise annoyance, environmental preservation, aesthetic aspects, sociological impact, etc.