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Made-to-measure in-ground sensors

Wimag and SLD4

Highly accurate information on the traffic load in your city or municipality. For this purpose, Siemens can provide you with made-to-measure in-ground sensors: Sitraffic Wimag and SLD4. Your benefits: The data will support you in better planning your infrastructure, reducing congestion and significantly improving the flow of traffic.

Sitraffic Wimag

Wireless technology for fast detection


With conventional in-ground detectors, entire loops have to be embedded in the pavement, making their deployment quite expensive. Sitraffic Wimag, in contrast, is an innovative wireless detection technology that scores with fast and easy installation. The Sitraffic Wimag family comprises three dedicated detector types, which can be integrated into a single system because they share the same transmission technology, including repeaters, base station and software. 

  • Sitraffic Wimag VD and MR detectors for moving traffic
  • Sitraffic Wimag PD detector for parking spaces

Sitraffic Wimag – an innovative technology with many advantages

  • Wireless technology makes for fast and easy installation of the Wimag sensor in the pavement.
  • The electronics module consists of magnetic sensors, processor, radio antenna and battery.
  • With dimensions of only 7.5 x 7.5 x 5.0 cm, the base station is very compact.
  • Each detection event is transmitted to the base station via radio link.
  • The base station forwards the data per Ethernet to the traffic controller.
Sitraffic Wimag. Feature highlights:
  • Easy, reliable and cost-effective traffic and parking space monitoring
  • High-precision information about current traffic loads
  • Sensor and base station designed for a temperature range of -45 to +80°C
  • Long service life, whether installed in new or existing pavements


Sitraffic Wimag
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Sitraffic SLD4

Sitraffic SLD4 loop detector: field-proven technology, extended range of uses


For more than 30 years now, induction loop detectors from Siemens have been dependably providing accurate traffic data. Sitraffic SLD4 combines this extensive experience with cutting-edge technology and a whole new range of applications.

  • High detection rates for all loop types (small/large, old/new, with short/long feeder cables)
  • Multiplexing allows all four loops of a detector to use the same frequency
  • DIP switches for basic parameter setting
  • Fast and easy installation and commissioning of the detector in virtually all use scenarios
  • Even complex applications are very easy to implement
  • The Sitraffic SLD4 unit smoothly slides into any Siemens controller or outstation cabinet
Sitraffic SLD4. Feature highlights:
  • Reliable detection helps optimize traffic management
  • Not susceptible to interference from ambient conditions
  • Automatic sensitivity adjustment
  • High flexibility in regard to the loop frequencies used (real multiplexing)
  • Easy installation
  • USB interface
  • Convenient parameterization via user-optimized PC software
Sitraffic SLD4
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Downloads, support and services

Infrastructure and urban traffic control

Growing traffic volumes, increasing air pollution, rising costs: A mobility solution cannot solve all your infrastructure challenges on its own. But it will always contribute to making your city or municipality even more modern, more attractive and more environmentally friendly.

In-ground sensors for your traffic management

Wimag and SLD4 are two novel detector technologies within the Siemens portfolio – in-ground sensors that score with high accuracy and easy installation.

Learn more about your customized in-ground sensor solution
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