Application of Customer Segmentation for Electronic Toll Collection: A Case Study

Table 2

Segmentation index of ETC customers.

Index	Abbreviation	Unit	Meaning
Recency	R	Hour	Time difference between the last time ETC used during the statistical year and a specified time.
Frequency	F	Times	Number of times ETC was used for a particular customer during the statistical year.
Monetary	M	Chinese yuan	How much paid for ETC for a particular customer during the statistical year.