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Worldwide No. 1 in selling fiber optic sensors for road traffic applications

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Our fiber optic road sensors
100% Vehicle detection rate - EMV immune and noise free - Visibility independent

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Our fiber optic rail sensors
Easy installation - EMV immune and noise free - Vertical wheel load

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Made in Germany
Competence Center for fiber optic sensor technology in Schrobenhausen

Visit by welcome partners and guests from Turkey

On April 17th, 2025 we had the honor of welcoming Mr. Semih Turnaoğlu, Operations Director of the Aydın-Denizli Motorway in Turkey, along with representatives from Fernas Group and a technical delegation from the General Directorate of Highways of the Republic of Turkey.

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8th Expert Conference Digital Rail 2024

Jürgen Dichtl, Managing Director at Sensor Line GmbH, was part of the 8th Expert Conference Digital Rail 2024 in Munich, Germany. He described the technology background of our SL FORPS sensor which is designed to replace the intermediate layer and measure the vertical impact of a train onto the rail.

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New Distribution Partner 'Mobylis'

We are proud and happy to announce that we are now cooperating with our brand-new distribution partner Mobylis (mobylis.es/sensores) for the Spanish road market.

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Prepared for the future

Sensor Line’s mission is to create the single best sensor technology and ITS and ETC sub-system for collecting and providing vehicular characteristic data with the highest possible accuracy and reliability for traffic monitoring applications.

Welcome to our World

Sensor Lines unique fiber optic sensing technology allows us to offer the most accurate and reliable and thus most cost effective vehicle detection and classification sensor for traffic monitoring. The sensors are especially designed and particularly suitable for electronic toll collection (ETC) and intelligent transportation system (ITS).

Sensor Line is now Quarterhill.

Quarterhill was launched to fast-forward the transportation industry into a safer, smarter, and more digitally-connected future. Starting soon sensorline.de will transport you to Quarterhill.com

Thank you for joining us on this exciting journey.

Discover Quarterhill

Further, Faster, Smarter