Air-Weigh

On-board weighing systems for UK HGV fleets

See axle and gross vehicle weight on a phone or tablet, an in-cab Bluetooth display, or your telematics platform, before the truck leaves the yard. 99+% accuracy on air suspensions, 97+% on mechanical.

Load Once, Load Legal, and Go!™

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[IMAGE: driver holding an Android phone showing the Air-Weigh app with live axle weights and total GVW, parked HGV in the background]
What it does

Live weight readings, before the wheels turn

An on-board weighing system reads weight straight off the vehicle's own suspension. Sensors connect to any air-suspension line and, where mechanical suspensions are involved, a deflection sensor mounts to the suspension. The Air-Weigh app (iOS or Android) shows steer, drive, trailer and total gross vehicle weight in real time over Bluetooth 5.3. The same data can run to an in-cab Bluetooth display or to a telematics platform via the CAN bus / SAE J1939 interface, in 10 kg increments.

That changes three things about how a fleet runs. Drivers stop guessing about load weight. Operators stop discovering an overload at the roadside. And every loaded run leaves a calibrated reading and a timestamp, building an audit trail a transport manager can refer back to later when a question arises.

What Air-Weigh systems are for, and what they are not for Air-Weigh on-board scales are designed for operational fleet weighing, payload control, and DVSA compliance audit trails. They are not certified for trade use under the Weights and Measures Act, so they should not be used to weigh goods for sale by weight. For the operational and compliance jobs they are designed for, the accuracy is more than enough.
[IMAGE: close-up of an iWeigh module installed on the air-bag suspension of a UK 6-axle articulated lorry]
Product range

Two product lines, four configurations

QuickWeigh is the air-suspension plug-and-play product. iWeigh is the advanced platform, with three vehicle-class variants. All four work alongside the free Air-Weigh app.

[IMAGE: two QuickWeigh units showing backlit displays with weight (kg) and BAR pressure readings, with the Air-Weigh app on an Android phone behind them]
QuickWeigh

QuickWeigh, digital BAR gauge plus on-board scale

Out-of-the-box a digital BAR pressure gauge for air-suspension vehicles, accurate to .002 of a single BAR. Calibrate it (single or dual-point) and it becomes a full on-board scale. Backlit IP67-rated LCD on the unit plus the QuickWeigh app on iOS or Android. PIN-protected after calibration, hardwired (no batteries). 99+% accuracy. 3-year limited warranty. Air suspensions only, 12V or 24V.

QuickWeigh details →
[IMAGE: iWeigh for Trucks module + tablet showing per-axle weights]
iWeigh

iWeigh for Trucks

Our advanced on-board scale platform for rigid HGVs. Works with both air and mechanical suspensions in a single module, including multiple axles. Weight reads on a phone or tablet (iOS or Android) via Bluetooth 5.3, on an in-cab Bluetooth display, or through SAE J1939 / CAN bus into telematics. 99+% accuracy on air, 97+% on mechanical. Over-the-air updates. 3-year warranty.

iWeigh for Trucks details →
[IMAGE: iWeigh Trailer module installed on a trailer chassis]
iWeigh

iWeigh for Trailers

The iWeigh platform configured for trailers, with the same install pattern as iWeigh for Trucks (power and air-line tee, plus a deflection sensor where mechanical suspensions are involved). Weight data is visible only through the free Air-Weigh app, a security feature for trailers. Same accuracy specs as iWeigh for Trucks (99+% air, 97+% mechanical). 3-year warranty.

iWeigh for Trailers details →
[IMAGE: artic with iWeigh on tractor + trailer, app showing combined weights]
iWeigh

iWeigh for Tractor Units / Trailers

Built for tractor-trailer combinations and drop-and-collect fleets. When iWeigh is fitted to both tractor and trailer, the units auto-pair, with no driver interaction. The Air-Weigh app shows steer, drive, trailer and GVW on a handheld over Bluetooth 5.3, with the same in-cab display and telematics options as iWeigh for Trucks. Drivers can validate weights inside or outside the cab.

iWeigh for Tractor Units / Trailers →
By sector

Built for the way your fleet loads

DVSA enforcement data shows different sectors face different overloading risks. Each of these pages covers what an on-board system needs to do for that specific kind of fleet.

A

Articulated lorries

Tractor units and semi-trailers, GVW and axle distribution.
T

Tippers & aggregates

40% of overload incidents per DVSA data. Loads tracked in tonnes.
F

Food & agriculture

Bulk food haulers, tractors, farm transport. Seasonal load variation.
W

Waste & RCV

Container, payload, and compaction-load weighing for refuse fleets.
C

Car transporters

Multi-deck loading, gross and axle weights, sequence compliance.
L

Livestock transport

Live-load weighing for animal welfare and route compliance.
90-second walkthrough

How an on-board weighing system works on a UK HGV

A driver using the Air-Weigh app from loading bay to roadside check.

[VIDEO: embed from the Air-Weigh YouTube channel]
UK regulatory context

The compliance picture, in one block

UK HGV weight enforcement is run by the DVSA. The maximum gross weight, the per-axle limits, and the graduated fixed-penalty bands are set out in published regulations. On-board weighing is the operator's tool for verifying that a truck is within those limits before it begins a movement, and for evidencing that verification when an officer asks.

Compliance reference

UK HGV weight limits

GVW and axle limits by configuration, abnormal-load rules, and the DVSA roadside enforcement corridors.

Read the UK reference →
Pain reference

The full cost of an overload fine

The headline graduated penalty plus the four costs nobody quotes (downtime, insurance, court, O-licence repute).

See the cost breakdown →
What buyers ask us

What buyers ask before deciding

How accurate is on-board weighing for DVSA purposes?

Published Air-Weigh accuracy is 99+% on air suspensions and 97+% on mechanical suspensions. Designed for operational fleet weighing, payload control, and DVSA compliance audit trails. Not certified for trade use under the Weights and Measures Act, so not for weighing goods for sale by weight. Read the full accuracy explainer →

Where do drivers see the weight readings?

iWeigh gives three display options: steer, drive, trailer and GVW on a phone or tablet through the free Air-Weigh app (iOS or Android, over Bluetooth 5.3); on an in-cab Bluetooth display; or sent through SAE J1939 / CAN bus into telematics. QuickWeigh has a backlit IP67-rated LCD on the unit itself plus the QuickWeigh app on iOS or Android.

How does on-board weighing fit my existing fleet?

Air-Weigh systems retrofit to existing HGVs and trailers. iWeigh connects to power and to the suspension air line (for air suspensions) or to a deflection sensor (for mechanical), and works with both in a single module. QuickWeigh installs on air-suspension vehicles only, with the QW2 kit including a brass T-fitting, mounting hardware, 7.6 m air line and 7.6 m power cable.

What does installation involve?

iWeigh: connect power and tee into the suspension air line, plus a deflection sensor where mechanical suspensions are involved. Components install on the chassis at any convenient location. QuickWeigh: plug-and-play install with the supplied T-fitting, hardware and cabling. All products are calibrated after install via the Air-Weigh app, single-point or dual-point depending on product.

What is the support arrangement once it is installed?

Air-Weigh products are designed, manufactured and supported in the USA. The UK sales and support contact is James Reece. The iWeigh platform offers remote technical assistance through the app, which can pinpoint calibration errors or technical issues. Over-the-air updates are pushed to iWeigh modules so the system gets new features without changing equipment. All current iWeigh products and QuickWeigh ship with a 3-year limited warranty.

Ready to see what fits your fleet?

Tell us how many vehicles you run, what they look like, and where they load. Our UK contact will come back with a fit assessment and a recommended product.

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