Number of directly connected port pairs or routes served during the reporting period.
Organizations should footnote all assumptions used.
This metric is intended to capture the number of routes served by the organization's transportation services. For example, an airline serving 62 direct flights from city to city would report 62 for this metric.
This metric may be most useful for investments in large-scale infrastructure and transportation.
This metric is often used by International Finance Institutions (IFIs) as part of infrastructure analysis.
This metric may help describe the HOW MUCH Scale dimension, which helps estimate the number of the targeted stakeholders experiencing the outcome. For more on the alignment of IRIS metrics to the five dimensions of impact, see IRIS+ and the Five Dimensions of Impact (https://iris.thegiin.org/document/iris-and-the-five-dimensions/). No single metric is sufficient to understand an impact; rather, metrics are selected as a set across all dimensions of impact. The selection of metrics to measure and describe the five dimensions should be based on best practice and evidence.
June 2022 - IRIS v5.3 Released (current version)
Immaterial change. Minor revision to usage guidance for clarity.
IRIS Metrics Work Better in Sets
To use IRIS metrics—and the resulting data—to understand impact performance, IRIS metrics should be used and analyzed in generally accepted sets and according to well-defined objectives. IRIS+ gives you access to generally accepted Core Metrics Sets aligned to common Impact Themes and Sustainable Development Goals (SDGs).