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To find out the vertical traffic patterns in buildings, passenger traffic per floor can be divided into four traffic vectors, entering and exiting passengers in and out of the cabin, and whether the passenger is travelling upwards or downwards with the elevator cabin, see Figure 2.1. These four vectors with the passenger arrival time provide sufficient information to reconstruct daily traffic patterns. The four traffic vectors do not have information of the passenger journeys, i.e. their origin and destination floors. With additional elevator status data, it is, however, possible to reconstruct probable passenger origin and destination floors, as shown in Section 21.2. With more accurate measurements individual passenger routes can be followed from origin to destination.

Figure 2.1 Four vectors of passenger traffic per floor

(Source: Siikonen and Kaakinen (1993 ). © John Wiley & Sons).