Calculator

How many portable GPS devices does a branch need?

Each device is busy for the trip and then for the days it takes to collect and recharge it. Size stock from dispatches and that cycle time.

By · Updated

Days each device is busy per trip–
Devices in use at any time–
Devices to stock (with buffer)–

Runs in your browser; nothing is sent anywhere. Planning estimate only.

How it is calculated

Cycle days per device = average transit days + days to collect, return and recharge. Devices in use = tracked dispatches per day × cycle days. Devices to stock = devices in use × (1 + buffer), rounded up. A shorter recollection time reduces stock more than anything else; read the device recollection playbook. Single-use devices are not recollected, so for those lanes set the return days to zero and plan purchases per trip instead.

Questions

How many portable GPS devices do I need?

Tracked dispatches per day multiplied by the days each device is busy (transit plus collection and recharge), plus a spare buffer.

How can I need fewer devices?

Shorten the time from arrival to collection and recharge; every day saved reduces the number of devices in circulation.

See it on your own data. Portable GPS Tracker — Track any truck, owned or hired. Book a 30-minute working session with an engineer.

General guidance, current as of the date above. Figures and examples are illustrative unless a source is linked.