What is a Missing Transponder alert?

A Missing Transponder alert is thrown when one of your assets receives a license plate toll, and there is no toll tag/transponder assigned to the asset in tollogic™.

Toll Collection Context

Toll agencies collect tolls by reading the toll transponder installed in an asset. If the transponder does not read, for any reason, the agency will capture an image of the asset’s license plate, find the asset in a state or proprietary database, and issue an invoice for the toll. This toll invoice, known as a license plate toll (LPT), may appear on your regular electronic toll invoice or mailed as a physical letter.

Because LPTs take more time and resources to issue, they are typically 25% more expensive than transponder tolls. Regional premiums vary for LPTs.

Please keep the toll transponder and license plate together on every asset to prevent license plate tolls and toll mismatches. If a transponder or license plate needs to be moved or removed, please update all relevant details within tollogic™ and your toll manager.

Incorrect Plate State Alert

When an asset incurs a license plate toll (LPT), tollogic™ will attempt to match the license plate on the toll to a license plate in our database. If the license plate number can be matched to an asset in tollogic™, but the license plate state does not match, then the asset will trigger an Incorrect Plate State alert.

Next Action

To prevent further LPTs, please verify this asset’s license plate and transponder details in tollogic™. If the plate state on this asset that triggered the alert should match the state on the LPT, please update the license plate state accordingly in tollogic™.

Update Information of an Asset


Click the Details tab on the Fleet popup modal.

To update a value in a field, replace the existing value with new value either by selecting an option from the dropdown or entering a value manually, depending on the options available in each field.

Click the Save button in the bottom-right corner after making the changes.

Note: You may not have the permission to edit all fields.