Fleet Utilization
How much a vehicle is actually used, against how much it would need to be used to justify holding it. The measure behind almost every decision to reduce a fleet.
Utilization compares use to the threshold at which owning an asset makes sense: miles, hours, days deployed, or trips, depending on the vehicle. Below that line the agency is paying to own something it could reasonably do without.
The measurement traps are specific and public fleets fall into all of them. Seasonal equipment looks idle for most of the year and is not underused; a plow that runs six days a winter is doing exactly its job. Emergency and standby capacity is held precisely so that it is not used. Backup and spare units exist to cover the ones in the shop. A utilization report that cannot distinguish these from a genuinely surplus vehicle will recommend removing the wrong assets, confidently.
Which is why utilization is a screening tool rather than a verdict. The number identifies candidates; a conversation with the department establishes whether the low usage has a reason. Fleets that skip the second step tend to win one round of reductions and lose the cooperation they need for the next.
The other structural point is that utilization is largely a funding artifact. Where vehicles are free at the point of use, they accumulate and stay. Where a department pays a real monthly rate, low-use vehicles get handed back without anyone running a report.
