Vertragendheidsindex

Vertragendheidsindex is a term that appears primarily in Dutch-language contexts and does not refer to a single standardized metric across all disciplines. Broadly, it denotes an index that measures delay or tardiness in a process, service, or delivery. The word combines vertraging (delay) with index, signaling a quantitative measure of how much or how often delays occur. Because the term is not universally standardized, its exact definition and calculation can vary by sector and organization.

In practice, vertragendheidsindex can be understood as a composite metric that aggregates delays across a set of events, tasks, or deliveries to provide an overall sense of schedule performance. Common approaches to its calculation include: (1) average delay time, computed as the mean of delay durations for late events; (2) delay rate, the proportion of events with a delay greater than zero; and (3) a normalized index, scaled to a range such as 0 to 100, where higher values indicate worse delay performance. Depending on the context, weights may be assigned to different categories of events to reflect their importance or impact.

Applications of the concept appear in logistics and supply chain management, project management, IT service delivery, and public administration, where organizations seek to monitor punctuality, adherence to schedules, and delivery reliability. Limitations include data quality, the chosen definition of delay, and comparability across contexts. See also on-time performance, service level, and schedule adherence.