[Phys-L] Re: Reaction Time (was Re: Human Error?)

[Larry Woolf <larry.woolf@GAT.COM>]

> Typical reaction times are on the order of .25 s
-------------------------------------------------

Reaction times can vary depending on whether or not you are anticipating an
event.  As I point out in

<http://www.sci-ed-ga.org/modules/driving/parts/StayingAlive.pdf>
page 86:

"There is an interesting discussion of reaction times in the
book Traffic Safety and the Driver [by Leonard Evans]. If you are
anticipating an event, reaction
times can be as short as 0.15 s. While driving, your reaction time is
divided
into a perception reaction time ("I need to brake") and a movement reaction
time (movement of your foot). For drivers focusing on the car ahead of
them, an average reaction time is 1.6 s. For drivers encountering an
unexpected obstacle around a blind curve, an average reaction time is closer
to 2.5 s."

Larry Woolf
General Atomics
www.sci-ed-ga.org
www.ga.com
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