Weigh In Motion systems, truck overloading

Weigh In Motion solutions

Traffic monitoring, weight enforcement and bridge protection made simple

Ageing infrastructures, increasing traffic and overloaded vehicles pose a threat to societies and call for countermeasures to keep roads and bridges safe. Advanced Weigh In Motion (WIM) solutions from Kistler enhance traffic safety, help to maintain road quality and protect infrastructure.

System integrators all over the world opt for WIM solutions from Kistler as part of high-level traffic management systems. Thanks to reliability and robustness, high accuracy and simple integration, operators rely on our solutions to safeguard and sustain traffic and structures. 

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100.000+ Lineas sensors

installed worldwide

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30 years of innovation

with unique quartz technology

Global support

50+ countries

where Kistler traffic solutions are present

Quartz crystal technology from Kistler - at the core of every sensor

Our WIM solutions are based on the Lineas high-precision quartz crystal sensors. They are renowned for their consistently high performance over time under all possible traffic and weather conditions.

Lineas sensors are used to measure wheel and axle loads, and they can also determine gross vehicle weights with no disruption to traffic flow. Installed in the road pavement, these sensors deliver highly accurate measurement signals.

Quartz crystal technology for the most challenging piezo dynamic force measurement applications
Innovation

The secret of our WIM solutions’ outstanding performance: Kistler’s unique piezoelectric quartz technology combined with advanced sensor design. Up to 50 disk-shaped quartz crystals, each no larger than a contact lens, are at the heart of every Lineas sensor. 

Benefits of quartz piezoelectric technology for Weigh In Motion (WIM) systems
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Stability

Lineas sensors have proven their durability in different pavements on all continents. They work with same precision in the cold winters of Europe as in the hot desserts of the Middle East.

Benefits of quartz piezoelectric technology for Weigh In Motion (WIM) systems
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Accuracy

With their wide measuring range, Lineas sensors can accurately measure both light and heavy vehicles, maintaining high levels of accuracy across all vehicle types. From walking pace to racing speeds, our WIM solutions ensure consistent results at all vehicle velocities.

Benefits of quartz piezoelectric technology for Weigh In Motion (WIM) systems
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Robustness

Lineas sensors are designed for long-term reliability, with a life expectancy of at least 10 years. Built on Kistler’s pioneering expertise, they are virtually maintenance-free even with extensive use, often outlasting the roads they are installed on.

Benefits of quartz piezoelectric technology for Weigh In Motion (WIM) systems

Manufactured to highest quality standards

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As a leading provider of quartz piezoelectric measurement technology, we achieve maximum performance by using advanced production equipment operated by skilled specialists at our Swiss plant. Advanced manufacturing processes allow us to maintain full control over every step, ensuring the highest quality at every stage.

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Each sensor undergoes rigorous inspections, including tightness checks and functional tests. We verify uniform sensitivity across the entire sensor length using our calibration system. Every sensor is 100% tested, factory-calibrated, and checked with high-precision tools before leaving our Swiss headquarters, ensuring reliable, top-quality products.

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Accuracy you can trust

As a leading provider of quartz piezoelectric measurement technology, we achieve maximum performance by using advanced production equipment operated by skilled specialists at our Swiss plant. Advanced manufacturing processes allow us to maintain full control over every step, ensuring the highest quality at every stage.

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Flexible integration, networking, and data consistency

Our WIM solutions can be easily extended with additional third-party components such as RFID transmitters, dimension scanners or ANPR cameras for number plate recognition. We offer comprehensive solutions covering the entire measuring chain, from sensors to software. Our WIM measuring chains can be easily networked and integrated into existing ITS systems, such as enforcement solutions. 

Solutions from Kistler enable 24/7 real time condition monitoring of sensitive infrastructures such as bridges and buildings.
Global support and comprehensive services

Thanks to Kistler’s global sales and service network, we are always close to our customers. We offer a portfolio of customized services to maximize the performance of every WIM site. Customers can choose from a range of options to enhance their individual WIM user experience and prolong their system’s lifetime.

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Efficient and minimally invasive installation

Lineas sensors are designed for quick installation, typically completed within a single day, and deliver reliable measurements for years. Lineas sensors can be installed on all types of pavement, including concrete and asphalt, with minimal disruption to traffic flow and limited need for road closures. Installation is cost-effective, requiring no heavy machinery and causing minimal road damage—only a small slot in the pavement. The modular and flexible design allows for easy adaptation to different lane widths, and the absence of screws or frames reduces the risk of flying parts, ensuring a safe and efficient setup.

Applications

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Pre-selection for weight enforcement

WIM solutions help preselect vehicles for traffic checks by quickly providing necessary data. It automatically records vehicle weights, axle loads and tire conditions at high speeds, leading to improved success rates in identifying potential violators and reducing pressure on authorities.

  • Automatic preselection of overloaded vehicles
  • Less road damage and elimination of illegal competition between transport companies
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Direct weight enforcement

Once legal requirements are met, direct weight enforcement with a high speed WIM solution provides the most efficient method for automated heavy vehicle checks. Thanks to Kistler's high accuracy standards, violators can be detected across multiple traffic lanes and penalized immediately.

  • 24/7 automatic enforcement of load violations without disrupting traffic flow
  • Significant improvement in weight enforcement campaigns with direct fines for overloaded vehicles, eliminating the need for static scales
  • OIML R134 certification facilitates national type approvals
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Automated tire screening

Incorrectly inflated tires are not easy to detect by visual inspections. Automated Tire Screening (ATS) is a feature of WIM solutions that allows authorities to automatically monitor tire pressures on all passing commercial vehicles, helping to identify potentially unsafe, damaged, or flat tires and improve road safety.

  • Automatic tire checks on all passing vehicles without disrupting traffic
  • Detection of tire types and anomalies such as underinflation, flats, mismatches, or missing tires
  • Available as simple upgrade for existing Kistler WIM sites
The Weigh In Motion system KiTraffic Statistics delivers automated real-time traffic data collection.
Traffic data collection

WIM solutions help refine infrastructure planning, optimize road maintenance, and improve traffic flow uniformity by providing real-time traffic data collection

  • Automated, non-stop traffic data collection
  • Reliable and accurate measurement of vehicle loads
  • Enriches count & classify data with weight information
  • Tracking of special transports
Bridge protection can be provided by traffic monitoring systems installed directly before or on bridges.
Bridge protection

WIM solutions from Kistler protect bridges worldwide: by collecting traffic load data as well as preventing overloaded vehicles from passing the bridge.

  • WIM data enables traffic load analysis and life expectancy calculations
  • Protection against overloaded vehicles - extending bridge lifetimes
  • Seamless combination with Structural Health Monitoring systems
Learn more
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Industrial weighing

WIM solutions provide a highly efficient way to manage industrial weighing, helping to streamline processes such as invoicing goods, checking axle loads, and measuring overall vehicle weights in ports, mines, and concrete plants-all as vehicles drive by.

  • Increased efficiency and higher throughput of measured vehicles per hour
  • OIML R134 certified for legally compliant weighing
  • Easy integration with components like RFID transmitters or LPR cameras for enhanced functionality
  • Fast installation with minimal disruption to operations
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Weight based tolling

WIM solutions generate revenue for road construction by charging users based on their vehicle's weight and road impact, ensuring fair tolls, covering maintenance costs, and preventing overloaded vehicles from accessing roads and bridges.

  • Easy integration with existing toll systems
  • Scalable for multiple lanes

Our KiTraffic solutions

Our KiTraffic measuring chains for WIM, are based on the piezoelectric quartz technology of Kistler’s Lineas sensors and comprising electronics. 
KiTraffic Statistics and KiTraffic Basic consist of analogue Lineas sensors and WIM Data Loggers. 
The certified solution for enforcement, KiTraffic Digital, consists of the Lineas Digital sensors and industrial grade electronics with Kistler software. 

As a global leader in dynamic measurement technology for measuring pressure, force, torque and acceleration, we support our customers in industry and science to improve their products and make their manufacturing processes more efficient.
KiTraffic Statistics

The cost-efficient solution for traffic data collection

  • Accuracy
    • ±10-15% GVW (gross vehicle weight)
       
  • Scope of delivery
    • Lineas Compact 9196A sensors 
    • WIM Data Logger 
Explore KiTraffic Statistics
As a global leader in dynamic measurement technology for measuring pressure, force, torque and acceleration, we support our customers in industry and science to improve their products and make their manufacturing processes more efficient.
KiTraffic Basic

The reliable solution for pre-selection of overloaded vehicles

  • Accuracy
    • Accuracy: ±5-10% GVW (gross vehicle weight)
    • Certified to OIML R 134 class F10
       
  • Scope of delivery
    • Lineas 9195G sensors
    • WIM Data Logger
Explore KiTraffic Basic
As a global leader in dynamic measurement technology for measuring pressure, force, torque and acceleration, we support our customers in industry and science to improve their products and make their manufacturing processes more efficient.
KiTraffic Digital

The most advanced solution for direct weight and tire enforcement

  • Accuracy
    • Accuracy: ±2-5% GVW (gross vehicle weight)
    • Certified to OIML R 134 class F5
       
  • Scope of delivery
    • Lineas Digital 9181A sensors
    • Industrial grade electronics with Kistler software
Explore KiTraffic Digital

Weight enforcement references

The Brooklyn-Queens Expressway in New York is protected by Weigh In Motion from Kistler for direct weight enforcement.
Brooklyn Queens Expressway (US)

In New York city the Brooklyn-Queens Expressway (BQE) with a triple-cantilever design is facing tremendous challenges due to overladed vehicles. Kistler's Weigh In Motion systems were deployed to help identify overloaded vehicles automatically. Recently Kistler’s WIM systems were certified and put into operation as the first automated citation system in the country and as a result overloading is diminishing. The collected data is also used to calculate the bridge's life span and to perform accurate traffic load analysis. “The collaboration with Kistler and C2SMART was key to bringing this first-in-the-nation automated direct enforcement system to life,” said Tanvi Pandya, P.E. DBIA, executive director, BQE Design Build & Emergency Contracts.

Data collection and research references

Erftstadt, A1 Highway (Germany)

The Institute of Highway Engineering at Germany’s RWTH Aachen University chose Kistler’s KiTraffic Digital for their pioneering ‘Digital Twin Road’ research project.

In 2023, ten Lineas Digital sensors were integrated seamlessly into Germany’s busy A1 highway – with no need for special road preparation or repaving.

A special sensor layout was designed exclusively for this project – highlighting Kistler’s commitment to offering flexible layout options and meeting customers’ needs.

Bridge protection references

Weigh In Motion for bridges: El Carrizo (227 m), equipped with Kistler WIM, is the second highest bridge in North America.
El Carrizo Bridge (Mexico)

The El Carrizo highway bridge in Mexico, the second highest bridge in North America, faced a significant traffic accident in 2018, leading to its closure. To enhance its safety two Weigh In Motion (WIM) checkpoints were installed using Kistler technology. The WIM system, consisting of accurate Lineas WIM sensors, measures automatically axle loads and total vehicle weights of passing vehicles. The WIM solution provided by Kistler ensures optimal compliance with weight restrictions and improves the overall bridge safety.

Are you seeking a WIM solution to ensure success for your upcoming project?

Then contact us – and let’s redefine the future of WIM together!