960 resultados para Bus driving


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National Highway Traffic Safety Administration, Washington, D.C.

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Mode of access: Internet.

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National Highway Traffic Safety Administration, Washington, D.C.

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Urban Mass Transportation Administration, Washington, D.C.

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Minnesota Commission on Alcohol Problems

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Transportation Department, Office of Transportation Planning Analysis, Washington, D.C.

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National Highway Traffic Safety Administration, Office of State Vehicle Programs, Washington, D.C.

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Decreasing vehicle understeer was strongly associated with the likelihood of control loss following both the unexpected and expected tire failures. Knowledge of the imminent tread separation reduced the overall probability of control loss from 55% to 20% and had a significant effect on how quickly drivers responded as well as on the nature of their initial responses (i.e., steering orbraking). Driver age was marginally associated with increased likelihood of vehicle control loss, but only on unexpected trials. Vehicle speed at the time of first steering input also contributed to the probability of control loss. Neither the location of the tire that failed (left rear vs. right rear) nor the specific instructions about how best to respond to the tread separation influenced the probability of control loss. Differences associated with vehicle understeer conditions observed in the present study were large and consistent, independent of driver expectations and across driver age groups. It is thus fair to conclude that in the event of a complete rear-tire detread, the increased difficulty in vehicle handling and the associated increased likelihood of loss of vehicle control with decreasing vehicle understeer generalize to real-world driving.

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National Highway Traffic Safety Administration, Washington, D.C.

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National Highway Traffic Safety Administration, Washington, D.C.

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National Highway Traffic Safety Administration, Washington, D.C.