Total drivers'-hours infringements as % of trips.
Failed or overdue safety inspections as % of total inspections.
Average fleet utilization in cubic capacity or tonnes carried (in + outbound).
% of actual load carried against potential fleet capacity (tonnes or cube).
Average cost of delivering a specified unit (e.g. pallet or tonne).
Total fleet cost per mile/km — running + standing + driver costs combined.
Fleet running cost per mile/km — fuel, tyres, lubricants, maintenance.
Per-day standing cost (depreciation, vehicle excise duty, operator licence, insurance) regardless of whether the vehicle runs.