New Structural Road Analysis service optimizes Weigh In Motion (WIM) performance

The road authority of the Czech Republic and SPEL, their local system integrator, were among the first customers to use the new Structural Road Analysis (SRA) service from Kistler. SRA helps to determine the right road location and the best sensor layout for optimum Weigh In Motion (WIM) performance: these two key factors ensure that direct enforcement applications deliver the required accuracy in all circumstances.

Automatic vehicle weight enforcement systems – or Weigh In Motion for short – are gaining popularity in numerous countries around the world. They can be used for many different applications: road monitoring, bridge protection, industrial weighing and (not least) direct enforcement of overloaded vehicles. But for this last application, the technology has to meet demanding requirements: the installed WIM system must ensure a reliable basis for legal prosecutions – and in purely technical terms, its performance must comply with the relevant standards. In many countries, an accuracy of at least 95 percent GVW (gross vehicle weight) is required for direct enforcement purposes – in any circumstances and at all times, regardless of environmental influences, time since installation and further factors.

Practice in recent years has shown that the actual performance of an installed WIM system is significantly dependent on road quality. That is why Kistler is now offering its customers a new service to ensure that their WIM solutions deliver maximum performance. Its name: Structural Road Analysis (SRA). Three levels of service are available:

  • SRA Standard: site evaluation based on customer documentation (e.g. drawings, maps, etc.)
  • SRA Plus: site evaluation and analysis based on IRI data (International Roughness Index)
  • SRA Full: site evaluation and analysis based on IRI and FWD data (Falling Weight Deflectometer)

Know your road thanks to in-depth analysis

One of the first customers to benefit from the new SRA service was SPEL, the local system integrator designated by the Road and Motorway Directorate of the Czech Republic (ŘSD ČR). For a planned extension to an existing WIM site at kilometer 8.3 of the D2 highway linking Břeclav and Brno, a full SRA was conducted over a length of 150 meters on both Brno-bound lanes. The goal: to identify the optimum location and best sensor layout to ensure optimum performance and maximum overall lifetime for the WIM system.

An earlier investigation had already highlighted the challenges presented by the road's condition, so a full-scale analysis was undertaken including road surface measurement, measurement of pavement bearing capacity (using FWD), and measurement of IRI and rut depth to determine the road's longitudinal and transversal unevenness. Based on the results, the pavement structure was modeled and the elastic modulus of each layer was calculated. The final report from Kistler to SPEL included an in-depth analysis and evaluation together with practical recommendations on system configuration and sensor layout.

Kistler handled the management of the entire project, including the IRI and FWD measurement services provided by two local partners. What's more, they gave us a full report on road quality along with specific recommendations on how to improve the WIM site. We were highly impressed by the results of their work.”

Miroslav Kolda, Production and Technical Director at SPEL

 

Data-driven recommendations enable WIM optimization

What were the results of the Structural Road Analysis? First of all, the base layers of both lanes were found to be fairly heterogeneous: however, the soil contains significant amounts of water that could have a seasonal effect on measuring accuracy and even lead to road damage. Rutting values at some points actually exceed the levels permitted for monitoring applications, so the locations for installing the sensors must be chosen very carefully. Lane one shows better overall quality and is suitable for direct enforcement in its existing state, but three rows of WIM sensors (instead of two) are recommended here. On the other hand, the analysis showed that the WIM system on lane two does not meet the requirements for direct enforcement in its present state. Four rows of Kistler Lineas sensors are necessary to achieve the desired GVW accuracy here.

A simulation model was calculated to determine the best sensor layout, taking account of profile data from both lanes. The model comprises eight vehicles that are each simulated in both empty and fully loaded conditions. On this basis, a location between meters 68 and 84 of the highway section was determined as the best position for the sensor installation. Kistler also provided a detailed graphical layout recommendation, with different sensor arrangements and intermediate distances for lanes one and two (see image).

SPEL was so impressed by this experience of the Structural Road Analysis that the integrator has now decided to use it for every upcoming WIM installation. “All the information generated by these tests is very valuable for us: knowing the right number of sensors, the best location, ideal layout and intermediate distances saves us a lot of time and money later on,” Kolda points out. In the meantime, SPEL has commissioned a second full SRA service. Discussions are now under way with ŘSD ČR about the possible introduction of a mandatory requirement for structural road analyses, so the new service from Kistler could be specified for all WIM installations in the Czech Republic in the future.

Michal Izak, Sales Engineer Traffic Solutions Eastern Europe at Kistler, comments: “This is the best endorsement we could possibly get for the SRA – our Structural Road Analysis service. We're glad to have shown in practice that these analyses are fully worth the effort. It's simply the right way to go for direct enforcement applications – both for large-scale systems and single WIM installations. We've already received a request from another system integrator in the Czech Republic – and I'm sure other countries will follow soon.”

2021/10/12
China VIに適合したエンジン生産のために、どのようにしてユチャイは精度、透明性、資源効率の改善をなし遂げたのか
2021/09/14
動力計、研究用チャージアンプおよびソフトウェアによる高精度な測定チェーンにより、客観的な比較試験が可能
2021/09/09
バレンシアのエストゥディオ・デ・ラ・ピサダの足病学エキスパートは、3Dフォースプレートを使って患者とアスリートのための治療法や装具を開発しています
2021/09/09
SRA: Find the best spot and the ideal sensor layout for direct enforcement of overloaded vehicles.
2021/07/02
Two IEPE accelerometers deliver key data for propulsion validation and optimization of flight characteristics even in the stratosphere
2021/06/25
動力計で擾乱を正確に捉えることにより、人工衛星の開発技術を向上
2021/06/02
Zero defect despite high volumes: this is the way quality assurance with Kistler test automation systems works for zinc die casting parts
2021/04/26
A digitally driven brake force measurement system makes the life of service technicians for train maintenance much easier
2021/04/13
Inside "The Atmosphere" at MARIN, 100 of our pressure sensors capture wave impacts under varying environmental conditions
2021/03/22
How MAN Energy Solutions is using sensors from Kistler to make its gas turbines fit for the future
2021/02/08
Measurement technology dedicated to the discipline and biomechanics of pole vault enables high performances
2020/10/05
How does a digital measuring chain for piezoelectric sensors work as part of a complex vehicle test stand?
2020/09/18
Convincing test results: The Ohio Department of Transportation goes on to apply Lineas from Kistler for traffic monitoring.
2020/08/20
Precision is the key to top performance: how measurement technology from Kistler supports the development team at EMUGE-FRANKEN
2020/07/22
Quality assurance solutions by Kistler like ComoNeo ensure highest accuracy at TSP Precision Tooling in Shanghai.
2020/06/09
Kistler supports Ceratizit in the development of HDT. This enables complex geometries to be produced with just one tool.
2019/11/15
Process monitoring systems and cavity pressure sensors from Kistler help to reduce the amount of scrap drastically
2019/10/23
How measurement technology from Kistler contributes toward boosting high-end powertools' quality
2019/08/15
How the ANALYSE system from Kistler is enhancing safety and transparency in the field of fastening technology
2019/07/17
Turkey opts for weight enforcement with WIM technology from Kistler
2019/06/24
For the next manned flight to the moon: safety that can be measured
2019/06/20
Segregation of good and bad parts every 1.5 seconds: process monitoring with Kistler enables high quality for over 5 million parts per year.
2019/05/14
In order to achieve excellent quality for its components and medical devices, Tessy Plastics chose sensors and solutions from Kistler.
2019/04/18
A renowned manufacturer of electrical appliances trusts testing and sorting systems by Vester to improve its quality.
2019/04/02
NFL's Jaguars boost their fitness levels with Kistler.
2019/03/25
By using process monitoring from Kistler, not only the assembly of electric fuses is validated, but even the function of the sensors itself.
2019/03/18
How to determine the fitness level of an athlete efficiently? A practical report on the Quattro Jump force plate system from Kistler.
2018/12/17
Thanks to precise Weigh in Motion technology from Kistler, Hungary's roads are sustainably protected against overloaded vehicles.
2018/11/27
Bang&Clean relies on Kistler's precise measurement of ignition processes and pressure wave propagation
2018/10/10
Sartorius applies the process monitoring system ComoNeo from Kistler and thereby increases the process quality during injection molding
2018/10/08
The Dortmund Technical University tests the new MicroDyn 9109AA cutting force dynamometer from Kistler and breaks new ground for developing its micromachining processes.
2018/08/31
The ZF company operates a software-controlled Kistler fastener test bench with an integrated vibration unit.
2018/08/14
BIG Daishowa, headquartered in Osaka, Japan, is one of the leading producers of tool holders for the machining industry. Each year the company produces over half a million collet chucks. Their products are developed using, among other resources, Kistler’s cutting force measuring device.
2018/07/16
Enhanced quality and efficiency in mobile crane manufacture – thanks to the test stand for torque tools by Kistler
2018/04/11
The world’s largest provider of rail transport technology relies on Kistler’s measurement expertise. Thanks to the only crash wall of its kind in the world, the impact forces of the trains and their components can be precisely measured and analyzed.
2017/11/14
In the development of cooling lubricants, Blaser Swisslube relies on Kistler's measurement expertise.
2017/08/11
Applus IDIADA relies on DTI in-dummy technology from Kistler for Test Device for Human Occupant Restraint (THOR).
2017/01/04
Road safety is a central topic in vehicle development. Through accurate measurements, Kistler helps increase the chance of survival in crashes.
2016/12/22
Kistler makes progress in vehicle development possible
2016/12/22
Kistler Sensor Correvit® SFII measures world record
2016/12/20
Kistler sensors deliver a maximum in data quality under any conditions.
2016/11/07
Kistler pressure sensors enabled the Rosetta space probe to fly for 6.4 billion kilometers.
2016/10/05
Since the end of 2015 FC Basel is using Kistler force plates to reduce the dropout of young talents.
2016/08/17
Kistler makes the difference in the crucial sports moments with its Performance Analysis System for Swimming.
2016/02/19
Determination of Pump Efficiency with Kistler KiTorq Measuring Flange System
2015/11/04
Piezoelectric Measurements with CompactRIO™
2015/06/15
Measurement Solutions for Automotive Test Systems
2015/05/08
Quality Assurance in the Automotive Industry
2015/03/02
How Brose improves the quality of its two-component production and automatically separates defective parts
2014/12/02
The Kistler Group pursues a growth policy that is both ambitious and sustainable – and strategic acquisitions are one of its core elements. ‘Strategic’ means that Kistler deliberately selects companies which can achieve more together with Kistler than they ever could by continuing alone. The takeover of Dr. Staiger Mohilo & Co. GmbH in 2006 enabled Kistler to grow jointly with the acquired company...
2014/12/02
After a ten-year voyage, the Rosetta space probe's Philae landing module finally touched down on the surface of comet ‘Chury’.
2011/08/23
HEWI and its Customers Benefit from Cavity Pressure Technology
2011/02/15
End-to-end process monitoring for critical medical moldings
2011/02/07
Cavity pressure measurement eliminates short shots at Fischer GmbH & Co KG of Sinsheim/Germany
お問合せ
Max 25 MB