The Siemens ST4S inductive loop vehicle detector is available for use in both urban and inter-urban environments. Designed to meet the latest specifications and utilising the latest design technology, the detectors will interface to all popular traffic control equipment and offer exceptional performance for traffic control. 

The Siemens ST4M inductive loop vehicle detector is available for use on motorways, expressways and other high-speed roads. Designed to meet the latest specifications, the detector will interface to all popular traffic control equipment and motorway cabinets and offers exceptional performance for traffic control, counting and incident detection.