Abstract: This paper presents results of an in-service performance evaluation of the bullnose median barrier used in the state of Iowa. The data were collected in a four-county portion of Iowa during a 24-month data collection effort ...

Abstract: A recent study suggested that the use of numerical integration methods would generally lead to the erroneous prediction of chaotic behavior for an unforced Duffing’s oscillator. It is shown ...

Abstract: Each year approximately 160,000 people are involved in accidents where the side of a vehicle strikes a fixed‐roadside object such as a tree, utility pole, or guardrail. Of these 160,000 occupants, 60,000 are injured and ...