The EU ROADEX Project 1998 - 2007 is a trans-national roads co-operation aimed at developing ways for interactive and innovative management of low traffic volume roads throughout the cold climate regions of the Northern Periphery Area of Europe. Its goals have been to facilitate co-operation and research into the common problems of the Northern Periphery. The overall objective for this research task was to increase the understanding for road user's health risks when riding on roads in poor condition. Better knowledge will facilitate the reduction of the risks, by means of improved pavement management, more conscious truck, bus and ambulance operations, and inspire to vehicle suspension systems improvements. The report commences with generic descriptions of how safety and health can be affected by ride vibration, how truck suspension systems isolate and amplify vibration at various frequencies, and how pavement properties, such as cross slope, control the important forces at work. A case study is reported from the Beaver Road 331 in northern Sweden. A heavy timber logging truck was instrumented to measure ride vibration and direction. Measurements were taken at a range of points (seat, cab, frame and wheels) and the results stored together with data on speed and interior noise. Ride vibration data from repeated rides over a 280 km long round trip from forest to coast industries was then compared with reference data on pavement condition, scanned by a laser/inertial Profilograph.