Axle Load & Overload Compliance
Overview
Measure the weight on each axle in real time, and the total vehicle weight behind it — so overload is caught before a roadside inspection catches it, and so loading and unloading events are documented as they happen instead of reconstructed from paperwork the next day. Two sensor families cover the two suspension types found across heavy fleets. Mechanical leaf-spring suspension uses an angle-shift sensor mounted on the rear axle or bogie, reading the deflection of the spring stack as the vehicle is loaded. Pneumatic / air-suspension uses a pressure sensor in the air line, reading the compressed-air pressure that supports the load. Both report to the on-vehicle GPS tracker, which ties weight to time, location, and driver — making the data usable for fine avoidance, unauthorized-cargo detection, suspension maintenance forecasting, and trailer load balancing across the fleet.
Challenges
- Roadside axle-load inspections produce fines per axle, per offence — costs that compound across a long-distance route and reach finance long after the trip is over.
- Manual weighing at a depot weighbridge documents the load on departure but tells operations nothing about cargo added or removed mid-trip — the gap underhand-cargo schemes operate inside.
- Mixed fleets carry both leaf-spring and air-suspension vehicles. A single sensor type fits one suspension and not the other, so the program needs both technologies to cover the actual fleet.
- Suspension wear is dominated by overload events, not by total mileage. Without a per-trip load record, maintenance is scheduled on hours rather than actual stress — and worn suspensions fail on the road.
- Trailer balance affects tire wear, fuel burn, and braking distance. Without per-axle data the fleet has no way to coach loading-bay crews on how cargo should be positioned.
Benefits
- Per-axle weight in real time, alongside total vehicle weight, with the GPS tracker tying every reading to location and trip — overload is caught before a roadside check writes the ticket.
- Unauthorized loading and unloading events flagged as they happen. Operations sees the weight change, where it happened, and which driver was present — not three days later when a customer reports the missing pallet.
- Same telematics stack covers leaf-spring and air-suspension vehicles. Two sensor families, one sensor category, one reporting platform — no separate dashboard per truck class.
- Suspension maintenance scheduled against actual axle-load events instead of hours-on-the-road. Replacement parts forecast more accurately, and overload-driven failures stop showing up on the depot floor.
- Per-trip load reports for loading-bay coaching. Trailer balance, axle distribution, and cargo position all become measurable inputs to the loading procedure — not folklore.
Recommended Products
DPS
Axle load sensor for vehicles with pneumatic (air) suspension. Measures air pressure changes in suspension elements and converts pressure readings to load weight via built-in calibration table. Available in analog, CAN, and RS-485 interface variants.
- Measures air pressure changes in pneumatic suspension elements
- Converts pressure to load weight via built-in calibration table
- Three interface options: analog 0-5V, CAN, RS-485
Eurosens
DDS
Axle load sensor for vehicles with spring (leaf) suspension using magnetoresistive sensing element. Converts lever rotation angle to output voltage proportional to axle load changes. Available in analog, CAN, and RS-485 interface variants.
- Magnetoresistive sensing element for angular displacement
- Stable analog signal or digital messages via CAN/RS-485
- Output proportional to axle load changes
Eurosens
DDS BT
Wireless axle load sensor for vehicles with spring suspension. Mounts on the chassis with a vertical rod connecting to the bridge. Suspension deflection under load converts to rod displacement and lever rotation, producing a BLE output signal proportional to axle load. 5-year battery life.
- Wireless Bluetooth Low Energy (BLE) transmission
- Compatible with monitoring terminals (Teltonika, Galileosky, Navtelecom)
- Built-in battery with 5-year lifespan
Eurosens
GNOM DP
Axle load (shift) sensor for measuring axle load and cargo mass on vehicles with leaf-spring suspension. Produces a stabilized analog output voltage proportional to the axle suspension lever angle, independent of on-board circuit voltage. A CAN variant (GNOM DP CAN, S6/CAN 2.0B SAE J1939) is also available.
- Measures axle load and cargo mass on leaf-spring-suspension vehicles
- Stabilized analog output independent of on-board network voltage
- Output voltage range 1.54-3.46 V across -40° to +40° lever angle
Technoton
GNOM DDE
Pressure sensor for use in pneumatic suspension systems of vehicles, obtaining pressure information from pneumocylinders or the pneumatic network to derive axle load. Produces a stabilized analog output voltage from 0.25 V to 3.80 V proportional to input pressure (0-0.8 MPa), independent of on-board circuit voltage.
- Pressure sensor for pneumatic / air-suspension vehicle systems
- Pressure measurement range 0-0.8 MPa
- Stabilized analog output 0.25-3.80 V independent of on-board voltage
Technoton
GNOM DP S7
Wireless (Bluetooth) shift sensor for determining axle load and cargo mass on leaf-spring-suspension vehicles within transport telematics systems. Transmits over the Technoton S7 wireless bus using a Bluetooth 4.1 interface and runs on an internal battery rated for at least 5 years.
- Wireless axle load / shift sensor for leaf-spring suspension
- Bluetooth 4.1 interface over Technoton S7 wireless bus
- Battery life at least 5 years (no external power required)
Technoton
GNOM DDE S7
Wireless (Bluetooth) pressure sensor for pneumatic suspension systems of vehicles, used for axle load determination within transport telematics systems. Transmits over the Technoton S7 wireless bus using a Bluetooth 4.1 interface and runs on an internal battery rated for at least 5 years.
- Wireless pressure sensor for air / pneumatic-suspension systems
- Pressure measurement range 0.1-1.4 MPa
- Bluetooth 4.1 interface over Technoton S7 wireless bus
Technoton
VOSS Axle Load Sensor for Mechanical Spring Leaf Suspension
Easy Accura
Strain gauge mechanical weight sensor for vehicles with spring leaf suspension. Installs on axle, frame, or leaf spring to measure static and dynamic loads. Features 0.5V-4.5V analog output compatible with any GPS tracker with an analog input, configurable gain (up to 32 steps), offset and polarity settings, and IPX9K protection with cover. German breakthrough SG technology with 9-meter cable for flexible installation.
- Strain gauge (SG) technology for high accuracy and sensitivity
- Easy installation and calibration on axle, frame, or leaf spring
- 0.5V-4.5V analog output compatible with any GPS tracker analog input
VOSS
FMC650
FMC650 is a direct successor to 4G PROFESSIONAL device FMC640. FMC650 has 4G LTE Cat 1 network coverage including 2G (GSM) fallback compatibility
- SCALABLE PROJECTS WITH EXTERNAL DEVICES — Integrate external sensors, RFID readers, thermographs, and other devices at any stage of the project to provide full context on cargo, driver, and fuel status
- FULL VISIBILITY INTO MACHINERY OPERATIONS — Collect CAN data to monitor key parameters specific to agricultural, marine, and heavy machinery, making all component use traceable and measurable
- SMART TACHOGRAPH DATA MANAGEMENT — Download tachograph files remotely and manage driver activity with real-time counter data via K-line, Tacho CAN, or FMS
Teltonika Telematics
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