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


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


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


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

IRD acquires Sensor Line GmbH

Sensor Line has been acquired by International Road Dynamics Inc. (IRD) as a wholly owned subsidiary. We are joining the IRD portfolio of products and solutions for Intelligent Transportation Systems (ITS) globally

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New York State Thruway project

We are very proud to be an important part of creating a safer, greener and less congested environment for all NYS commuters.

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What makes our rail sensor FORPS so unique...

is, among others, the easy installation, the immunity against any kind of electromagnetic interference, and our new electronic XD-1100.

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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).