Vehicle Availability

Vehicle availability, often used interchangeably with 'uptime', is a primary measure of a maintenance strategy's effectiveness. It directly reflects a fleet's operational readiness and its capacity to generate revenue. It is calculated with a simple formula:

The formula

Availability (%) = (Total Scheduled Operating Time - Total Downtime) / Total Scheduled Operating Time × 100

What a good rate is worth

A high availability rate (e.g., >95%) indicates a healthy and well-managed fleet. It is a crucial KPI because it encompasses the impact of all maintenance activities. Effective preventive and predictive maintenance will increase availability by reducing unplanned downtime. Efficient repair processes will increase availability by minimizing the duration of both planned and unplanned downtime.

Availability or reliability

While reliability measures how often a vehicle fails, availability measures whether it is ready to work right now. A highly available fleet is a productive and profitable one, making this KPI a key focus for fleet managers.