Kadett

normal:
Single-family homes, doctors’ surgeries, boutiques, smaller shop entrances (< 250 passages per day)

heavy:
Administrative buildings, banks, schools, shops with average amounts of visitors (< 250 – 2000 passages per day)

very heavy:
Shopping centres, airports, very heavily frequented entrance areas (2000 passages per day and up)

highly heavy:
Shopping centres, airports, exceptionally heavily frequented entrance areas (5000 passages per day and up)