Solution 02 / Enforce
Enforcement is a data problem before it is a weighing problem.
An overloaded axle matters only when the record survives a challenge. So the lane is built to produce a chain of evidence: the weight, the plate, the image, the time and the decision shown to the driver.
01 / The chain
A number nobody can attach to a vehicle is not evidence.
As a truck crosses the plate, the system resolves gross and axle loads. In the same instant, automatic number plate recognition reads the identity, and an image and video record are linked to that pass. The LED information board can flag a speeding or overweight result to the driver immediately, while the full file is retained for later review.
This is the practical difference between a screening tool and an enforcement system. The former tells you something happened; the latter lets an authority say which vehicle, at which axle, at what time, and show the picture.
02 / Anti-cheating
Drivers adapt. The lane has to notice.
Once a fixed checking point is known, a small share of traffic will try to beat it. The software is written for the manoeuvres that actually occur in service.
Weaving around the plate
An S-shaped approach tries to present only part of the wheel load or to miss the sensing area. Full-wheel integration and lane-wide detection flag the abnormal pass instead of quietly recording a light weight.
Accelerating over the line
A sudden burst of speed changes the load transfer between axles. The system reads the speed profile with the weight and treats an inconsistent pass as an exception, not as a valid measurement.
Abnormal crossing behaviour
Dragging or stopping on the plate produces a signal that does not match a normal rolling pass. It is identified and held for review rather than being averaged into a clean-looking number.
Unattended does not mean unmanaged.
The lane is specified for 7×24 operation with no operator present. If the network fails, records stay in local cache and sync when the link returns. Several sites can be supervised from one place, so a regional authority sees one consistent set of rules rather than a collection of isolated boxes.
A checking point that closes at night is a checking point that drivers learn to use at night.Operational note