What do measures in Truck Usage Mean?
Understanding truck usage calculations
1. How is Truck Usage Calculated?
Truck usage is calculated based on the number of working days within a given period. The system assumes 300 working days per year (this setting can be changed).
| Parameter | Definition |
|---|---|
| Working Days | The number of days a truck is expected to be in operation. Currently set to 300 days per year. |
| Days in Period | The number of days selected for analysis. This could be the full year or a specific range. |
Example Calculation
- If a truck worked 100 days in a full year:
- Truck Usage = (100 days worked) / (300 working days) = 33%
2. Adjusting for Different Date Ranges
When selecting a custom date range, the system adjusts the number of expected working days within that period.
| Parameter | Definition |
|---|---|
| Total Year Length | 365 days (includes working and non-working days). |
| Working Days per Year | 300 days (configurable setting). |
| Days in Period | The number of days selected for analysis (e.g., 180 days). |
| Expected Working Days | Adjusted working days for the selected period. |
Example Calculation
- If a 180-day period is selected:
- Expected Working Days = (180 / 365) × 300 = 148 working days
- If a truck worked 100 days in this period:
- Truck Usage = 100 / 148 = 68%
3. What Happens if You Select Just 1 Day?
When only 1 day is selected, the calculation scales working days accordingly.
| Parameter | Definition |
|---|---|
| Days in Period | 1 day |
| Expected Working Days | 1 / (365 / 300) = 0.82 working days |
| Truck Usage | 1 day worked / 0.82 expected days = 122% |
This result appears inflated because the calculation assumes the truck is working beyond the expected limit for that single day.
4. Example Summary Table
| Scenario | Days in Period | Expected Working Days | Truck Worked Days | Truck Usage Calculation | Final Truck Usage |
|---|---|---|---|---|---|
| Full Year | 365 days | 300 working days | 100 days | 100 / 300 | 33% |
| Half Year (180 days) | 180 days | 148 working days | 100 days | 100 / 148 | 68% |
| Single Day | 1 day | 0.82 working days | 1 day | 1 / 0.82 | 122% |
Key Takeaways
- Truck usage is based on 300 working days per year (configurable setting).
- When selecting a date range, expected working days are scaled proportionally.
- Choosing very brief timeframes, such as a single day, can result in distorted percentages because of the way calculations are normalized.