Measure outcomes where possible
Travel time, outage duration or collection reliability often say more than the number of sensors installed.
Use context
A target appropriate to one city may be unrealistic or too weak in another.
Combine performance and equity
Average performance can be paired with variation across neighbourhoods.
Indicators need stable definitions
Changing the measurement method can create false trends.
Scope boundary. This page explains system relationships at a planning level. Real utility, transportation, emergency, structural, electrical, cybersecurity and public-safety decisions require local agencies and qualified professionals.