Tentative criteria for the design of safe sloping culvert grates. Paper presented at the 51st Annual Meeting of the Highway Research Board HRB, Washington, D.C., January 1972.

A computer simulation has been used to study the dynamic behaviour of a selected vehicle negotiating various ground forms in the vicinity of the sloping inlet of outlet grate for a culvert. These simulations provided information on dynamic tyre forces, accelerations, and translational as well as rotational motions of the automobile. For some ground forms, roll-over occurred as illustrated by computer graphic displays. (See also B 210 for preprint of this paper).