METHOD AND SYSTEM FOR PERCEPTUAL SUITABILITY TEST OF A DRIVER
First Claim
1. A method for automatically executing a suitability test with respect to perceptual impairment of a driver or other equipment operator, comprising the steps of:
- (a) presenting at least one first optical stimulus pattern to the equipment operator;
(b) detecting and quantifying at least one ocular performance indicator of the equipment operator selected from the group consisting of smooth pursuit (SP), saccadic velocity (SV), vergence (V), pupil reaction (PR), and head coordination (MC) in response to the stimulus;
(c) quantifying a value of perceptual suitability (PS) of the equipment operator by the formula;
PS=A*SP+B*PR+C*HC+D*V+E*SV, wherein A, B, C, D, and E are predetermined weighting factors or functions;
(d) comparing the value of perceptual suitability (PS) with at least one threshold value in order to generate a decision about impairment or non-impairment of the equipment operator, and (e) if there is uncertainty in the result of said comparing or suspicion of impairment, presenting at least one second optical stimulus pattern with a greater complexity than the at least one first optical stimulus pattern and/or presenting at least one second optical stimulus pattern which is germane to the ocular performance indicator which is uncertain under step (d), and repeating steps (b) to (d) therewith.
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Accused Products
Abstract
A tractor truck configured for towing trailers of different air connection configuration. The truck has a first and a second tractor protection valve, each configured to be located on the tractor at a location remote from the other. Each tractor protection valve location is proximate a typical position at which a mating connection on a trailer will be located when hitched to the tractor. The truck also has a selector which is operator-transitionable between a first configuration in which the first tractor protection valve is activated to supply pressured air to an interconnected trailer and a second configuration in which the second tractor protection valve is activated to supply pressured air to a different interconnected trailer.
51 Citations
19 Claims
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1. A method for automatically executing a suitability test with respect to perceptual impairment of a driver or other equipment operator, comprising the steps of:
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(a) presenting at least one first optical stimulus pattern to the equipment operator;
(b) detecting and quantifying at least one ocular performance indicator of the equipment operator selected from the group consisting of smooth pursuit (SP), saccadic velocity (SV), vergence (V), pupil reaction (PR), and head coordination (MC) in response to the stimulus;
(c) quantifying a value of perceptual suitability (PS) of the equipment operator by the formula;
PS=A*SP+B*PR+C*HC+D*V+E*SV,wherein A, B, C, D, and E are predetermined weighting factors or functions;
(d) comparing the value of perceptual suitability (PS) with at least one threshold value in order to generate a decision about impairment or non-impairment of the equipment operator, and (e) if there is uncertainty in the result of said comparing or suspicion of impairment, presenting at least one second optical stimulus pattern with a greater complexity than the at least one first optical stimulus pattern and/or presenting at least one second optical stimulus pattern which is germane to the ocular performance indicator which is uncertain under step (d), and repeating steps (b) to (d) therewith. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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Specification