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A few studies have demonstrated positive effects of Advanced Parking As-sists (APA) on driver comfort and parking performance. Learning effects while handling the APA system and possible transfer effects on manual parking have not been discussed yet. In this study, N = 18 subjects parked parallel in a test area (26 manoeuvres) and in real traffic (9 manoeuvres). One half of the manoeuvres was done without the parking assist, one half with a semi-autonomous APA system which utilized automatic steering. The APA system did not control speed by accelerating or braking. Consistent with earlier studies, the APA system facilitates parking. Learning effects particularly ap-pear in glance behaviour and maximum velocity during the first parking motion. Using the APA over a large number of manoeuvres might influence parking without assistant: The more manoeuvres are done with the APA, the more often the drivers look into the display during manual parking.

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