Samenvatting
In order to be able to convert vehicle-kilometre data from traffic counts into kilometres travelled, the daytime occupancy of seven vehicles categories on six different road sites is counted one week a year. It is doubtful if the sample is representative: the main aim was to cover the various types of road and, by using the same method each year, to be able to carry out trend analysis. Occupancy is declining as ownership rates increase for most of the vehicle categories.