Integration · additive overlay

One more identity stream. No lane rewrite.

Tollscopic DOT# emits commercial-vehicle carrier events that can be joined downstream to existing violation transactions by site, lane, time, and context. The lane controller, plate camera, transponder system, and back office stay in place.

01 · The overlay

Tollscopic DOT# events sit beside your tolling stack.

Two streams, one downstream correlation. The existing transaction stream is not touched. The DOT# event stream is additive. The join happens after both streams exist — read-only, downstream of the lane.

EXISTING TCS Lane controller + back office VIOLATION TRANSACTIONS Unresolved · commercial vehicles DOT# CAPTURE Side-fire + edge + cloud IDENTITY EVENT STREAM Carrier events · confidence · refusal CORRELATION OVERLAY Read-only · join by site/lane/time HYDRATED QUEUE Carrier-named violation records EXISTING STACK · UNCHANGED · DOT# · ADDITIVE · CORRELATION · DOWNSTREAM
02 · Existing stack stays in place

Tollscopic DOT# does not need to own the lane.

The lane controller, ANPR cameras, transponder readers, and back office continue unchanged. DOT# adds a parallel event stream and a downstream correlation step. Integration happens after the lane, not inside it.

01
Lane controller

Unchanged. Tollscopic DOT# does not write into the TCS database or compete with the lane logic.

02
Plate camera

Unchanged. Tollscopic DOT# is a parallel sensor focused on commercial-vehicle door panels.

03
Transponder system

Unchanged. AVI/RFID continues to handle the primary identity path.

04
Back office

Unchanged. Tollscopic DOT# adds a stream the back office (or a thin overlay) can consume.

03 · Correlation logic

How the two streams meet.

The correlation overlay joins existing violation transactions with Tollscopic DOT# identity events by structural attributes. Ambiguous multi-match cases are kept explicit; the overlay never silently picks one.

Site
plaza, ramp, gantry, or named structural identifier
Lane
lane reference shared by both streams where available
Reference timestamp
the violation transaction time and the identity event time, with a tolerated window
Vehicle class / context
commercial-vehicle class hints corroborate the join
Trajectory
optional · vehicle path context when available
Ambiguous multi-match
tracked explicitly; never silently resolved
04 · Downstream uses

What the hydrated queue enables.

The output of the overlay is a stream of carrier-named violation records — and named refusals. From there, deployment policy decides what downstream systems are allowed to do.

01
Hydrate unresolved commercial violations

Attach a carrier candidate to violation records that the existing path could not resolve. The default audit-friendly use.

02
Route verified to human review

Verified events can flow into a review queue with full evidence — frames, fields, scoring rationale, version tags.

03
Catalog miss → analysis

Catalog-miss events surface unknown-carrier patterns that may indicate stale snapshots or out-of-region traffic.

04
Measure commercial leakage

A neutral audit of the commercial-vehicle residue, even before any downstream action is taken.

05 · Delivery patterns

Events leave through the path that fits the operator.

Event delivery is implementation-specific. The design point is that events are emitted from an outbox and can be delivered to the customer's chosen downstream path. The patterns below are the common ones.

01
Webhook

HTTPS endpoint receives events as they emit. Most familiar pattern for modern back offices.

02
Object-storage batch

Periodic batch of events to S3 or equivalent. Friendly to back offices with batch ingestion.

03
Event bus

Kafka or similar. For operators with event-driven downstream systems.

04
SFTP batch

Scheduled file drops over SFTP. The legacy-friendly pattern when needed.

An event stream beside your tolling stack.

No critical-path lane replacement. The Tollscopic DOT# event stream is additive; the correlation overlay is read-only. The question is which delivery pattern fits your back office.