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Developing measures of fatigue using an alcohol comparison to validate the effects of fatigue on performance. Accident Analysis
- Prevention
, 2001
"... Department of Transport and Regional Services Australian Transport Safety Bureau ..."
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Cited by 14 (2 self)
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Department of Transport and Regional Services Australian Transport Safety Bureau
Reaction time of drivers to road stimuli
, 1982
"... The assumption of a reaction time value for drivers responding to road situations is fundamental for the design requirements involving sight distance, in particular for vertical and horizontal curves. This response time is frequently referred to as the "perception-reaction time " in traffi ..."
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Cited by 9 (0 self)
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The assumption of a reaction time value for drivers responding to road situations is fundamental for the design requirements involving sight distance, in particular for vertical and horizontal curves. This response time is frequently referred to as the "perception-reaction time " in traffic engineering literature. Previous attempts to estimate an appropriate value for this time are discussed, along with other relevant laboratory and field reaction time literature. It is suggested that the procedures used have generally been deficient on one of several grounds. The majority of studies have used briefed subjects in an experimental situation. The duration of various processing stages have generally been arrived at by a subtractive technique. Responses have usually been assumed to be the result of speeded processes. Within single studies, the stimulus situations examined have typically been limited. The requirement for unobtrusive observational techniques is stressed so that reaction time estimates can be obtained that are representative of real world performance. This approach was used in the study reported here to obtain data for a range of eliciting stimuli. The salience of the stimulus type was estimated by the driver response rate and form of response distribution. Vehicle speed was observed for some situations, so as to allow an assessment to
FATIGUE IN TRUCK ACCIDENTS iiiCONTENTS
, 1989
"... Based on Coroners ' verdicts, fatigue of car or truck drivers was a contributing factor in 9.1 % of fatal accidents involving trucks. Based on the presence of factors such as extended driving hours, falling asleep at the wheel, comments about tiredness, driving right of centre and night-time dr ..."
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Based on Coroners ' verdicts, fatigue of car or truck drivers was a contributing factor in 9.1 % of fatal accidents involving trucks. Based on the presence of factors such as extended driving hours, falling asleep at the wheel, comments about tiredness, driving right of centre and night-time driving, the authors estimated fatigue contributed to 19.9 % of the accidents. There were approximately equal numbers of fatigued car drivers and truck drivers. An analysis of casualty and fatal truck accidents by time of day (adjusted for exposure) showed that accident risks were highest during the night on all five Victorian highways studied. Driver fatigue is one of the possible factors underlying this pattern of elevated risk. The report section described in-vehicle fatigue counter-measures. The distinction between fatigue monitors and alerting devices was made and it was recommended that eye closure and head nodding monitors and an alerting device be tested in the next stage of this project. Key Words: Fatigue (human), accident rate, fatality,
Evaluation of Reaction Time in Virtual Reality environment for road safety increasing
"... Road safety is actually an overall objective of all industrialized countries. Design and development standards for roads and infrastructures ’ management are considered the main strategy to assure an adequate safety level. Since reaction time impacts on many design standards, they are based on kinet ..."
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Road safety is actually an overall objective of all industrialized countries. Design and development standards for roads and infrastructures ’ management are considered the main strategy to assure an adequate safety level. Since reaction time impacts on many design standards, they are based on kinetic and dynamic assumptions. Technical regulations for road design and institutional laws often disagree, both about conceptual approach to calculation, and about numerical value. In the light of this, an experimental investigation seems to be crucially needed. Till now experiments have been indeed performed in the field of psychological sciences but the outcomes can not be extended immediately to road engineering, because the approach is not properly consistent to objectives of road engineering. This paper examines how an experimental investigation has been performed using an advanced interactive driving simulator. The drivers have undergone two kinds of stimuli have been fed to the drivers. The first kind needs immediate reactions and the second one needs lines of reasoning before taking a decision/action. It has been shown that: (1) the drivers learn process of automatic reaction to the stimulus and reaction time decreases to 10 % (0.15 seconds); (2) reaction time is about constant (1.00 second) when a reasoning is needed. Increasing of workload has been emulated by locating the