An ELD and a TMS are not the same thing, and the best results come from pairing them well. The ELD records hours of service, location and vehicle data. The TMS runs loads, customers, invoices and driver pay. The integration between them decides whether your dispatchers see live truck status or spend the day calling drivers.
What each system does
What each system does
| Job |
ELD / telematics |
TMS |
| Hours of service logs |
Yes |
Reads HOS to plan loads |
| GPS location |
Yes |
Displays it on loads and customer tracking |
| DVIRs and vehicle diagnostics |
Yes |
May use for maintenance alerts |
| Load planning and dispatch |
No |
Yes |
| Invoicing and settlements |
No |
Yes |
| Customer visibility and EDI updates |
Limited |
Yes |
Motive, Samsara and Geotab are excellent telematics platforms, but none of them is a full carrier TMS on its own. You need both, working together.
What data should flow between your ELD and TMS
- Truck and trailer location, updated automatically on each active load
- Driver hours available, so dispatchers don't assign loads a driver can't legally run
- Status events such as arrived, loaded and delivered, triggered by geofences
- Odometer and fuel data for IFTA and cost-per-mile reporting
- Driver and vehicle records, kept in sync so you don't maintain two lists
Choosing between Motive, Samsara and Geotab
All three are widely used and appear on FMCSA's list of registered ELDs. The right choice usually depends on factors other than the TMS:
- Hardware and contract terms. Compare device costs, contract length and cancellation terms.
- Camera and safety programs. If dash cams and driver coaching matter, compare those features directly.
- Coverage where you run. Rural and remote lanes test connectivity and offline logging.
- Existing investment. If your fleet already runs one provider, switching rarely pays off just to suit a TMS.
The better question isn't which ELD is best. It's whether your TMS integrates deeply with the ELD you already have.
How to test an ELD integration before you buy
- Ask whether the integration is native, certified by the ELD provider, or custom-built.
- Watch live data from your own trucks flow into the TMS during the demo or a trial.
- Check how often location and HOS refresh, and what happens when a truck loses signal.
- Ask how the vendor monitors the connection and how quickly it fixes sync issues.
- Talk to a customer who runs the same ELD provider as you.
Special cases: agriculture, livestock and USPS
How Tracx works with your ELD
Tracx integrates with Motive, Samsara, Geotab and Verizon Connect, pulling location and status into dispatch, customer tracking and settlements. Because Tracx doesn't sell its own ELD hardware, you keep the telematics provider that already works for your fleet.
Frequently asked questions
Can Samsara or Motive replace a TMS? No. They are strong telematics and compliance platforms, but they don't run the full load-to-invoice workflow a carrier TMS handles.
Should I pick my ELD or my TMS first? If you already have an ELD, pick a TMS that integrates with it. If you're choosing both, confirm the integration before signing either contract.
What is a native ELD integration? It's a direct connection maintained by the TMS vendor, as opposed to a file export or a custom project you pay to build.
