Fleet telematics combines GPS tracking, vehicle diagnostics, load-space temperature and door sensors, and driver data in one live feed. For a chilled or frozen fleet, or anyone moving medicines, it lets you see a refrigeration fault while the vehicle is still on the road, and gives you the temperature record for every delivery once it is done.
The value comes from how it is deployed, not from the tracker alone. There are 680+ trackers and cold-chain boxes on the move on the Sematics platform today. This guide sets out the rollout we follow with fleet customers: define the goals, choose hardware by vehicle class, pilot, integrate, then scale.
What telematics does in a cold chain fleet
| Component | What it gives you |
|---|---|
| GPS tracking | Live location and route history, for ETAs, delay management and proof of delivery time |
| Load temperature and door sensors | Readings from the load space, with alarms if temperature leaves its limits or a door is left open |
| Vehicle diagnostics | Mileage, fuel and fault data from the vehicle, for planned maintenance |
| Driver data | Harsh braking, acceleration and idling, and camera events where fitted |
| Reporting | A temperature and location record for each journey, ready for a customer, auditor or inspector |
Combined, these support both compliance (GDP for medicines, food hygiene rules and retailer standards for food) and day-to-day running costs.
Where telematics saves money
The savings are real, but they depend on your fleet, routes and starting point, so we do not quote a percentage. The places they come from are consistent:
- Less product lost. A live alarm when a load warms lets the driver or depot act before the stock is written off.
- Less fuel. Better routes and less idling reduce mileage and engine hours.
- Less downtime. Diagnostics flag engine and refrigeration faults before they strand a vehicle.
- Faster audits and claims. A journey record replaces paper logs and logger downloads, and settles disputes over a rejected load.
- Safer driving. Driver behaviour data and cameras support coaching and evidence after an incident.
Step 1: define your objectives
Write down what you want to change, and how you will measure it, before choosing hardware. Typical objectives are:
- Prove temperature control on every delivery for GDP or a retailer audit
- Reduce rejected loads and product write-offs
- Cut delivery delays and give customers live ETAs
- Lower fuel use and idling
- Improve driver safety and reduce incidents
Take a baseline for each one before the pilot, so you can show the change afterwards with your own numbers.
Step 2: choose hardware by vehicle class
| Hardware | Best for |
|---|---|
| Plug-and-play OBD II tracker | Vans and light vehicles: fits in seconds with no wiring; GPS, diagnostics, fuel; Bluetooth to Eye sensors |
| Installed vehicle tracker | Refrigerated vans, HGVs and trailers: hard-wired, door and probe inputs, backup battery |
| Asset tracker | Unpowered trailers, containers and cold boxes: own battery, up to 3 years |
| Camera-enabled tracker | High-value or high-risk work: up to 2 vehicle cameras, CAN data |
Product pages: OBD II tracker, installed tracker, asset tracker, camera-enabled tracker and vehicle cameras. Load-space temperature, humidity and door status come from Eye sensors, Bluetooth sensors that pair with the tracker and last up to 5 years. An EN 12830 variant (±0.5 °C) is available for food transport. For the full device list, see choosing monitoring hardware.
Step 3: pilot before you scale
Fit a small group of vehicles that represent the fleet: one of each class, the hardest route, the oldest refrigeration unit. Run it for long enough to see real alarms, then refine alarm limits, delays, escalation and reports before the full rollout. A pilot also shows drivers and depot staff what the system does before it reaches everyone.
- Project and install teamJTFBefore and during
- Survey vehicles and routes
- Specify hardware per class
- Install and commission
- Set up alarms and reports
- Train admins and dispatch
- Named internal ownerYour fleet teamThroughout
- Set objectives and baseline
- Pick pilot vehicles
- Agree escalation contacts
- Review pilot results
- Transport managerDrivers and depotsFrom the pilot
- Briefing on what is recorded
- Respond to alarms
- Report sensor or fitting issues
A typical split of work. Your plan may differ.
Step 4: integrate with the rest of your operation
Telematics is most useful when it sits with the rest of your monitoring. On the Sematics platform, vehicles appear alongside cold stores and depots, so you can:
- Follow a load from the cold store, through loading, to delivery, on one record
- Send alarms to the right person by email, SMS, voice call or app push, with escalation
- Produce journey and temperature reports for customers and auditors
- Connect to dispatch, quality or customer service systems through integrations
Common mistakes
| Mistake | Why it is a problem |
|---|---|
| Buying hardware before scoping the fleet | Devices that do not fit the vehicle types or the evidence you need |
| Installing the whole fleet without a pilot | Alarm limits and reports are never tested before everyone depends on them |
| Not engaging drivers or unions | Resistance, and privacy concerns about what is recorded and who sees it |
| No internal owner | Nobody is accountable for alarms, reports or follow-up, and the rollout stalls |
| Alarms to a shared inbox | Nobody responds at night; send them to named people with escalation |
How JTF supports the rollout
- System design based on your fleet and routes
- Hardware specified for each vehicle class
- Installation and commissioning, on site or at your depot
- Training for administrators, dispatch and quality staff
- Battery changes, probe calibration and maintenance
- Ongoing reviews against the objectives you set
See how fleet customers use it in the logistics fleet case study and proactive food transport, or read about cold chain logistics monitoring.
Questions people ask
How does telematics show temperature control during transport?
Sensors in the load space report through the vehicle's tracker in real time, and the platform alarms if readings leave their limits. Each journey keeps a temperature and location record you can show a customer, auditor or inspector under GDP or food hygiene rules.
What happens if a vehicle sensor reports an excursion?
The platform alerts the people you choose, by email, SMS, voice call or app push, and escalates if nobody acknowledges it. Related alarms can be grouped into one incident, and the response is recorded with the readings.
How long do vehicle sensors last?
Eye sensors last up to 5 years and the battery asset tracker up to 3, depending on reporting frequency. We handle battery replacements, probe calibration and maintenance.
Is there an EN 12830 option for food transport?
Yes. An EN 12830 variant of the Eye sensor (±0.5 °C) is available for temperature recording in food transport and storage.
