| Scenario | Spaces (S) | Period (T) hours | Vehicles (V) | Avg duration (D) hours | Turnover/space | Turnover/space/hr | Utilization (%) |
|---|---|---|---|---|---|---|---|
| Day shift lot | 60 | 10 | 180 | 1.20 | 3.000 | 0.3000 | 36.0 |
| High turnover kiosk | 18 | 8 | 220 | 0.35 | 12.222 | 1.5278 | 53.4 |
| Night crew parking | 45 | 12 | 70 | 5.00 | 1.556 | 0.1296 | 64.8 |
- Turnover per space (period): Turnover = V / S
- Turnover per space per hour: Turnover/hr = V / (S × T)
- Vehicle-hours (demand): Vehicle-hours = V × D
- Utilization (from duration): Utilization% = (V × D) / (S × T) × 100
- Vehicles from occupancy (if V is blank): V ≈ (Occ% × S × T) / D
- Theoretical max turnover: Max turnover ≈ T / D
- Turnover efficiency: Efficiency% = (Actual turnover / Max turnover) × 100
- Count the marked parking spaces (S) serving the work area.
- Select an observation window (T) such as a shift or peak period.
- Record total vehicles using the area during the period (V).
- If available, add average duration (D) from samples or ticket data.
- Add optional occupancy and peak accumulation to refine interpretation.
- Press Calculate to view turnover, utilization, and revenue.
- Use Download CSV/PDF to share a documented snapshot.
1) Data Inputs That Drive Reliable Turnover
Start with a clean space count (S). Exclude blocked bays, reserved stalls, and areas used for storage. Choose an observation period (T) that matches site operations, then record total vehicles (V) using the lot. When possible, measure average duration (D) from 30–50 samples to reduce noise. Define whether you count entries, exits, or unique plates, and apply the same rule across all survey days.
2) Typical Ranges Seen on Construction Sites
Crew parking usually turns slower because stays are long. Many sites see roughly 1–4 vehicles per space per shift in workforce lots. Visitor and delivery zones can be higher, often 4–8, and short-stop areas near gates can reach 8–12 when dwell times are brief. Treat these as planning bands.
3) Interpreting Turnover, Utilization, and Peak Accumulation
Turnover (V/S) shows how many vehicles each space serves over the period. Utilization uses vehicle-hours: Utilization% = (V × D) / (S × T) × 100. Peak accumulation helps flag congestion risk—if peak parked vehicles approach supply, circulation and searching time will increase even if average utilization looks moderate.
4) Using Duration to Forecast Capacity and Queues
Duration links arrivals to occupancy. With S=60, T=10 hours, V=180 and D=1.2 hours, turnover is 3.0 and utilization is 36%. If D rises to 2.0 hours at the same arrivals, utilization becomes 60%, leaving less buffer for peaks. The theoretical maximum turnover (T/D) highlights tight operations.
5) Reporting Results and Next Actions
Export CSV or PDF to document assumptions, counts, and computed indicators. If peak occupancy exceeds 85–90%, consider re-striping, staggered shifts, remote drop-off, or dedicated short-stay bays. Repeat surveys on typical weekdays to verify improvements and avoid decisions based on one unusual day.
1) What is the difference between turnover and occupancy?
Turnover counts how many vehicles each space serves over a period. Occupancy describes how full the parking is at a moment, usually as a percentage of spaces in use.
2) Why can utilization be greater than 100%?
Utilization is derived from vehicle-hours. Values above 100% can occur if duration is overstated, stacking happens, or the measured demand area differs from the counted supply.
3) I don’t know total vehicles. Can the calculator estimate it?
Yes. Leave vehicles blank and provide average occupancy (%) plus average duration (hours). The estimate uses V ≈ (Occ% × S × T) / D.
4) What observation period should I use?
Use a period that matches the decision: a full shift for workforce parking, or the busiest window for visitors and deliveries. Keep the period consistent for comparisons.
5) How do I measure average duration professionally?
Time-stamp vehicles at entry and exit, or record plates at fixed intervals. Collect at least 30–50 samples during the chosen period to reduce sampling error.
6) Can I evaluate multiple lots on one page?
This page calculates one scenario at a time. Run each lot separately and export CSV files, then combine the results in a spreadsheet if you need a single summary table.
7) How are revenue values computed?
Hourly pricing multiplies vehicle-hours (V × D) by your hourly rate. Per-vehicle revenue multiplies total vehicles (V) by the fee per vehicle. Keep currency units consistent.