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8 Cards in this Set

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Perception-Reaction (P-R) Time

Time elapsed between detection of a hazard and the reaction implementations

PIEV

Perception - Interpret hazard


Intellect - decide on correct decision


Emotion - may alter response


Volition - acting on decision made




Perception time

t(1) - t(0)


Time realizing the hazard ( registration of object - object becomes visible)

Intellect emotion Time



t(2) - t(1)


decision - realization

Volition Time

t(3) - t(2)


Driver implements - driver decides

PIEV Time

t(3) - t(0)

PIEV = PDA Time is dependant on

Complexity of situation


Whether situation is novel or familiar


Stimulus expected or not


Strength of stimulus

Road Design Solutions

Perception - Grab Drivers Attention


Decision - simplify the driver options for decisions


Action - reinforce consistency and eliminate surprises in the road infrastructure