Supply chain visibility means that all parties involved can follow, up to date, where a shipment and its stock are, what condition they are in and when they will arrive, from order to delivery. Loading, customs, border and delivery events are brought together in a single view, and an early warning is generated when there is a deviation from the planned flow.
Which questions does visibility answer?
Visibility is not just seeing a dot on a map. A well-designed setup answers four questions at the same time:
| Layer | Question | Typical data source |
|---|---|---|
| Location | Where is the cargo right now? | Vehicle GPS, vessel AIS data, terminal events |
| Condition | What condition is the cargo in? | Temperature, door and shock sensors, seal record |
| Process | Which stage is it at, and what comes next? | Customs declaration, transit opening and closing, border queue, proof of delivery |
| Forecast | When will it arrive? | Remaining distance, driver rest plan, historical crossing times |
Visibility looks at the present and the near future. Proving retrospectively which batch a product came from and whose hands it passed through is a matter of traceability. The two use the same data but answer different questions.
Why does it matter?
- Inventory: If the arrival date is reliably known, the factory does not hold extra safety stock "just in case it is late".
- Production and installation planning: For equipment that is confirmed to wait three days at the border, the crane hire and installation team on site are rescheduled in advance; no cost is incurred for an idle team.
- Additional charges: If discharge and free-time dates are tracked, demurrage and detention can be avoided.
- Customer communication: The customer learns about a delay, with its reason and the new date, before having to ask.
- Evidence of damage and deviation: A temperature record or the time a door was opened becomes objective evidence in a dispute; in the cold chain this is done with a temperature data logger.
How is visibility set up?
- Define the milestones: For example loading, export customs, border exit, border entry, destination customs and delivery. For each one, the condition under which it counts as "completed" is written down.
- Connect the data sources: Vehicle telematics, shipping lines' tracking services, customs system notifications and warehouse software are fed into one place via API or EDI.
- Use a common language: GS1's EPCIS standard records each event in terms of "what, when, where, why and how"; on the container side, the DCSA event standard serves the same purpose.
- Write exception rules: For example the vehicle standing still for more than 6 hours, trailer temperature exceeding +8 °C, or the expected arrival slipping by more than 24 hours.
- Assign ownership: It is defined who each alert goes to and within what time it must be answered.
- Measure: Indicators such as the on-time, in-full delivery rate are reported regularly; the method is explained in the entry on measuring OTIF.
Why is exception management at the heart of it?
A team monitoring hundreds of shipments at once cannot look at every location update. An efficient setup leaves shipments that are progressing according to plan in the background and highlights only those that deviate. The institutional form of this approach is called a logistics control tower. The aim here is not to report the problem but to intervene before costs arise.
Common obstacles
- Data gaps: Mobile signal is weak in mountainous border areas and at some crossing points; devices store the data and send it later.
- Multi-party chain: Subcontracted carriers, ports and customs brokers use different systems; a single link failing to provide data spoils the whole picture.
- Security and privacy: Location and cargo information carries a theft risk, and driver data is personal data. Access rights and sharing rules must be set from the outset.
How does Voltim Global support this?
For road shipments, Voltim Global provides daily vehicle tracking and reporting and also records the customs and border stages in these reports. Supply chain security is managed within the scope of ISO 28000.