Explanation of the used codes and overview of which codes were included in analysis.

X = included in analyses. To be included in analyses, a secondary trip purpose had to be mentioned at least 10 times (as combined with a primary trip purpose) by car users and by cyclists and/or walkers.
aHighly correlated with code 107 (private contacts during trip). When persons were coded as both 71 and 107, code 71 was deleted.
bHighly correlated with code 89 (recreational outings). When persons were coded as both 89 and 102, code 102 was deleted.
Explanation of the used codes and overview of which codes were included in analysis.