Dwell time is the length of time a vehicle occupies a parking space, curb segment, loading zone or charger, from arrival to departure.
It is one of the most useful numbers in parking because it links supply to demand. Short dwell times mean each space serves many vehicles a day; long dwell times mean the same space serves one or two. Measured over time, dwell distributions show who is using a facility and what they are willing to pay.
Ten drivers want this space between 8 a.m. and 8 p.m. Drag the average stay and see how many of them get it.
| Average stay | Drivers one stall serves in 12 hours |
|---|---|
| 30 minutes | 24 |
| 1 hour | 12 |
| 2 hours | 6 |
| 4 hours | 3 |
| 8 hours | 1 |
Illustrative: assumes the stall is refilled as soon as it empties.
Where dwell time matters
- Turnover. Turnover is roughly the hours a space is available divided by the average dwell. Cut dwell and the same supply serves more customers.
- Pricing. Rate schedules shape dwell: escalating hourly rates discourage long stays where short-term access is the priority.
- Curb and loading zones. Pickup and drop-off are measured in minutes, so even small overstays create double-parking and queues.
- EV charging. Charging time and dwell time are different numbers; a car that is full but still plugged in blocks the next driver, which is why sites add idle fees.
How it is measured
- Entry and exit transactions in gated facilities.
- License plate recognition reads at entries or patrol vehicles in gateless and on-street settings.
- Occupancy sensors and camera analytics at stall or curb level.
The Parkonomics view
Dwell time is the bridge between a parking count and a business model. Before adding supply, look at how long people stay and whether pricing and enforcement match the use you want. Many “full” facilities are simply serving long stays that a better rate structure would move.
Related terms: Turnover Rate, Parking Turnover, Curb Management, Passenger Loading Zone
Further reading: Pricing the Curb; The Evolution of Parking Management