SMIDSY

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The acronym SMIDSY, short for "sorry mate, I didn't see you", is used by British and Australian motorcyclists and cyclists to describe collisions in which a car driver fails to perceive a two-wheel user (see motorcycle safety).

There is good evidence that drivers may in fact see at the subconscious level, but that this is not translated to the conscious as the brain does not perceive the other as a threat, so a driver may be able to see a bipedaller, but not transfer this information into an action of adjusting their automobile.

These collisions may be recorded as failure to see, or as simply right-of-way violations.