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Lateral load balance may be important in some rollover incidents and may provide a measure that could relate to the pavement damage from unbalanced loading. Individual wheel loading was measured on 92 heavy trucks operating in western Oregon during 1995. This paper presents the analysis of those results in the form of distributions for various categories of wheel loads and for several unbalance measures. Unbalance was found to have approximately normal statistical distribution with the center of gravity off-set up to 4 inches from the vehicle center. For axle sets the center of gravity off-set was up to 7.5 inches.

Staged motorcycle-to-car and motorcycle-to-barrier collisions were conducted with seventeen early 1990's models Kawasaki 1000 motorcycles. The impact speeds into the barrier and cars were varied between 10 and 49 MPH. The purpose was to observe the change in motorcycle wheelbase, and characterize motorcycle-to-car and motorcycle-to-barrier crush profiles. These crash tests will expand the existing motorcycle crash test database. The vehicles were instrumented with tri-axial accelerometers to facilitate the analysis of forces, speed change, and stiffness. Some of the crash tests were recorded by high-speed video cameras. This paper characterizes the data collection system, summarizes the data collected, and lists the parameters that characterize the collision. Crush data and vehicle rest positions were recorded by typical reconstruction methods.