The proportion of people (R) in the population (N) who have made at least one trip in a period (usually one year).
Calculation: NRI = R/N x 100.
Different net travel intensities are calculated for different types of travel, the best known of which is vacation travel intensity. There is also the short trip intensity and the business trip intensity.
Source: Fuchs, W. (2021). Tourism, hotels and gastronomy from A to Z. Walter de Gruyter.