The twelve flags at a glance
Every mismatched transaction carries one of twelve flags. Six are agency side: the toll authority billed wrong and the finding is disputed for a refund. Six are fleet side: your tag and plate setup caused the charge and the finding is fixed inside the fleet so it stops recurring. A few sit in both camps, and the table says so.
| Flag | Side | Disputable | One line |
|---|---|---|---|
| Max toll | Agency | Yes | Maximum fare charged because entry or exit was not read; GPS shows the real trip |
| Duplicate | Agency, sometimes fleet | Yes | One crossing, two charges; includes tractor and trailer tags both billed |
| Misclassification | Agency | Yes | Billed at a higher vehicle class than the unit's |
| Toll overpaid | Agency | Yes | An extra charge between the entry and exit of a closed system |
| Express lane overcharge | Agency, policy question for the fleet | Yes | Charged above the dynamic rate in effect, or charged express where GPS shows the general lanes |
| Violation | Agency, often fleet cause | Sometimes | Violation fee where the tag should have read or the plate was registered |
| Misread | Fleet, sometimes agency | Sometimes | Tag read where GPS says the unit was not, or tag paired to the wrong truck |
| Plate overcharge | Fleet | Sometimes | Plate or video rate charged although a tag was present |
| Non-optimal tag | Fleet | No | A different tag type would have paid less for this state or facility |
| Unassigned toll | Fleet | No | Tag or plate mapped to no unit in your toll account |
| Unmatched toll | Fleet | Research first | A charge with no fleet crossing at that facility and time, or a rate that matches no posted rate |
| Potential misuse | Fleet | No | A tag billing charges that follow no fleet unit's GPS |
Working any of them is on the Toll manager guide. Getting the data in is on Get started.
How a finding is decided
TollTally reconstructs each trip from GPS, places every toll crossing on it and prices the crossing for the unit's configuration (axles, class, tag or plate payment method) at that date and time, from the toll rules for that facility and direction. TollMatch then takes each posted transaction and looks for its crossing on three keys: the unit the transponder or plate is paired to, the toll facility, and the timestamp within a tolerance. The comparison of posted amount against expected amount, together with what else was posted around it, produces the flag. The rules are deterministic: the same statement and the same GPS always produce the same result, which is what makes the evidence hold up in a dispute.
When the GPS is missing around a crossing, the expected amount is a rate lookup rather than a reconstruction, some flags cannot be raised, and a max toll cannot be disputed on entry and exit evidence. That is why the Unit Summary and Tag/Plate views track transactions without GPS percent: a tag billing with no GPS behind it is the first thing to fix.
Refunds are recognized automatically. When a later statement carries a credit against a disputed transaction, TollMatch ties it back to the original, moves it to Refunded and records the percentage refunded.
Agency-side flags
The toll authority or your toll management provider billed something the crossing does not support. Each of these is worked to a dispute with the generated evidence report, and the refund shows on a later statement.
Max toll
Agency side
What it means. A closed-system facility, where the fare depends on where you entered and exited, charged the maximum fare because one end of the trip was not read.
How TollMatch decides. GPS places the actual entry and exit points on the facility and prices that distance; the posted amount is the facility maximum for the class. The difference is the overpaid amount, and the entry and exit timestamps go on the report.
Common causes.
- The transponder did not communicate at the entry or exit gantry, so the system assumed the longest possible trip
- Plate unreadable at one end: obscured, damaged, dirty
- Tag not read and the account then treated as video or toll-by-plate at the maximum
- Class on the account does not match the vehicle, or the account is in a state the agency treats as non-standing
What to do. Dispute it. Max tolls are the largest agency-side bucket for most fleets and the one agencies refund most readily when entry and exit are shown. Create request sends it to your provider from the dashboard; the evidence report goes to an agency you hold directly. Then check the mount on that unit's tag, because a tag that misses one gantry misses more.
Usual path: Disputable to Disputed to Refunded.
Duplicate
Agency side Fleet side
What it means. One passage through a toll point, or one trip on a toll road, billed twice.
How TollMatch decides. Two posted transactions match the same crossing on the same unit within the timing tolerance, or a tractor tag and a trailer tag or plate were both charged for a crossing GPS shows once.
Common causes.
- Both the transponder and the plate read and were charged separately
- Two detection devices read the same vehicle
- A manual payment and an electronic charge for the same crossing
- Two active transponders in one unit, or tractor and trailer both tagged
- Agency system changes or transmission errors
What to do. Dispute the second charge. Then check whether the unit carries two active tags or whether trailer tags are generating their own charges; if so, the fix is in the truck and the flag stops recurring.
Usual path: Disputable to Disputed to Refunded; Fleet resolvable if two tags are active.
Misclassification
Agency side
What it means. The agency charged the toll for a higher vehicle class than the unit's.
How TollMatch decides. The class implied by the posted amount is higher than the unit's configured class, and adjacent crossings on the same road by the same unit were charged at the lower class. ELD and trailer state help decide whether the unit was in a different configuration on that trip.
Common causes.
- Road sensors misjudging axle count, weight or height
- A class set incorrectly on the transponder or account
- A faulty tag causing the lane to fall back to a default class
What to do. Dispute it with the correct class and the adjacent crossings as the pattern. If the class on the account itself is wrong, correct it with your provider or agency so the unit stops being billed high.
Usual path: Disputable to Disputed to Refunded.
Toll overpaid
Agency side
What it means. On a closed system, a single entry and exit should produce one charge. An additional charge posted between that entry and exit is an overpayment.
How TollMatch decides. GPS shows one continuous trip on the facility between an entry and an exit, and more than one charge was posted for it beyond the entry-exit fare.
Common causes.
- Multiple plazas in a closed system each posting a charge
- A tag read at an intermediate gantry treated as a new trip
What to do. Dispute the additional charge with the trip detail showing the single entry and exit.
Usual path: Disputable to Disputed to Refunded.
Express lane overcharge
Agency side Fleet side
What it means. Express lanes price dynamically by time. A charge above the maximum rate in effect for the length traveled at that time, or an express-lane charge where GPS places the unit in the general-purpose lanes, is an overcharge.
How TollMatch decides. The posted amount is compared with the rate window for the facility at the crossing time and length; GPS lane position is checked against the express lane geometry.
Common causes.
- The gantry misjudged the class or the distance traveled on the lane
- A general-purpose lane crossing billed at the express rate
- A repeated pattern from certain agencies that refund when disputed
What to do. Two steps. First decide the policy: express lanes are priced for passenger traffic and rarely make sense for a truck, and many fleets do not allow or reimburse them. Then dispute the genuine overcharges with the rate window and GPS position on the report. The Off-policy view shows which units use express lanes and how often.
Usual path: Disputable to Disputed to Refunded; the policy side is a fleet decision.
Violation
Agency side Fleet side
What it means. A charge above the tag rate and the plate rate: a violation notice or fee, issued where the tag should have read or the account should have covered the crossing.
How TollMatch decides. The posted amount exceeds both the tag and plate rates for the crossing and carries the agency's violation coding; GPS and account state are attached as evidence.
Common causes.
- No valid transponder read: missing, malfunctioning, expired, or the wrong tag for the agency
- Plate not registered with the agency that runs the road
- Account not in good standing at the time
- A vehicle you no longer own still registered to your account
What to do. Where the tag or plate was valid and the account in good standing, dispute the violation with the evidence. Where it was not, fix the cause: register every active plate with every agency you cross, replace or remount the tag, keep the account funded, and remove sold or stolen vehicles from the account. Pay valid violations promptly; late fees compound.
Usual path: Disputable or Fleet resolvable, depending on the cause.
Fleet-side flags
The charge traces back to how tags and plates are set up in your fleet. Some can still be disputed, but the lasting saving is the fix: update the pairing, pull the tag, register the plate. These flags should fall month over month once the fixes are made; if they do not, the pairing list at your provider and the one in TollMatch have drifted apart.
Misread
Agency side Fleet side
What it means. A toll was charged to a unit that GPS says was not there, or no charge was posted where GPS shows a crossing.
How TollMatch decides. The tag read at a facility while the unit it is paired to was elsewhere on GPS; or the unit crossed on GPS and nothing posted. Repeated misreads on one tag, with another unit's GPS matching the reads, produce a pairing recommendation.
Common causes.
- The tag is riding in a different truck than the pairing list says
- Lane equipment or video plate errors at the agency
- Data errors in the posted transaction
What to do. Check the pairing first: accept the recommended unit, update your provider's Vehicles list, re-send the export. If the pairing is right and the unit was demonstrably elsewhere, dispute with the GPS.
Usual path: Fleet resolvable to Fleet resolved; Disputable where the agency read a tag that was not there.
Plate overcharge
Fleet side
What it means. Also shown as Transponder unread. The crossing was billed at the license plate or video rate although a tag was in the unit.
How TollMatch decides. A tag is paired to the unit and reading at other facilities, but this crossing posted at the plate rate.
Common causes.
- Tag obscured, badly mounted, damaged or dead
- The plate is not registered to the account, so the agency billed by plate without the tag discount
- The tag is not accepted by that agency
What to do. Check the mount and the tag; replace it if it fails again. Register the plate with the agency. Where the agency allows, dispute the difference between plate and tag rate with the tag's reads on adjacent crossings as evidence.
Usual path: Fleet resolvable to Fleet resolved; sometimes Disputable.
Non-optimal tag
Fleet side
What it means. The transponder in the unit is not the primary or cheapest tag type for the agency where the truck runs, so the crossing cost more than it needed to.
How TollMatch decides. The tag type on the posted transaction is compared with the tag types the agency prices lower; the recommendation weighs toll spend and travel frequency per unit to say whether a different tag is worth issuing.
Common causes.
- A home-state tag used on roads where another program's tag pays a lower rate
- Trucks re-assigned to new lanes without the tag being reconsidered
What to do. Not disputable: the crossing was priced correctly for the tag used. Decide by unit whether the spread justifies issuing the better tag, and put the right tag in new trucks for the lanes they will run.
Usual path: Non-actionable for the crossing; a fleet decision for the unit.
Unassigned toll
Fleet side
What it means. The posted transaction names a transponder or plate that is mapped to no unit in your toll account, so nobody knows which truck it belongs to and it lands in no cost center.
How TollMatch decides. The transponder or plate on the transaction does not appear against any unit in the pairing list; TollMatch suggests a unit where GPS travel patterns match the tag's reads.
Common causes.
- The pairing list at your provider was not updated when a tag was issued or moved
- A retired or sold truck whose tag or plate is still active
- A tag or plate that is not yours at all
What to do. Use the suggested pairing, update the provider, confirm the vehicle is still in service, and deactivate anything that is not yours. Over time, as long as GPS is flowing, this category should shrink to nothing.
Usual path: Fleet resolvable to Fleet resolved.
Unmatched toll
Fleet side
What it means. A charge with no fleet crossing at that facility and time, or a posted rate that matches no rate the agency publishes for any class.
How TollMatch decides. No unit on GPS was at the facility within the timing tolerance, or the posted amount does not correspond to the facility's rate table.
Common causes.
- A tag or plate assignment that is wrong, so the charge belongs to a different unit
- Fees the agency adds to the toll: processing, administrative, missing-transponder
- Date, time or location errors in the statement line
What to do. Research it before disputing: check the pairing, then compare the statement line with the agency's posted rates and look for added fees. If it is a fee, decide whether it is legitimate; if it is a pairing error, fix the pairing and the charge will match next time.
Usual path: Fleet resolvable, or Disputable once the cause is clear.
Potential misuse
Fleet side
What it means. A tag or plate is generating charges that follow no fleet unit's GPS: a truck tag riding in a passenger vehicle, two tags active in one unit, or a tag charging after it should have been deactivated.
How TollMatch decides. Charges post on the tag at places and times where no fleet unit's GPS is present, or two different tags post for the same unit within a day, or the transaction class does not fit a truck.
Common causes.
- A driver or someone else using a truck tag in a personal vehicle
- A new tag installed and the old one never removed
- A lost or stolen tag still active
What to do. Locate the tag. If it cannot be found, deactivate it with your provider today. Pull redundant tags from units carrying two. Consider a written tag policy; misuse tends to repeat on the same tags.
Usual path: Fleet resolvable to Fleet resolved; not disputable with the agency, because the crossing happened.
Why closed systems produce max tolls
On an open-road facility, each gantry posts its own charge and a missed read simply means a missed charge or a plate charge. On a closed system, such as the Pennsylvania Turnpike, the New York Thruway ticket system or the Ohio Turnpike, the fare is set by the pair of entry and exit points. If one end is not read, the system cannot compute the pair, so it charges the longest possible trip for the vehicle class. That is the maximum fare, and it can be several times the fare the truck actually earned.
The same facilities also fall back to the maximum when the plate cannot be read, when the account has insufficient funds or is suspended, and when the class on the account does not match the vehicle. GPS gives the missing half of the pair: the actual entry and exit, with timestamps, which is exactly what the agency needs to reprice the trip. This is why max tolls are both the largest agency-side bucket for most fleets and the most reliably refunded one.