Skip to main content

New Siemens loop detector functionality

An improved version of the SLD4 loop detector family is now available from Siemens. The upgraded SLD4 is said to include sophisticated length-based classification with configurable outputs, which can be set to activate when specific conditions are detected, such as large vehicles exceeding a predefined speed. As well as offering standard vehicle detection, the latest version of the SLD4 ca
November 11, 2013 Read time: 2 mins
Siemens SLD4 loop Detector
An improved version of the SLD4 loop detector family is now available from 1134 Siemens.

The upgraded SLD4 is said to include sophisticated length-based classification with configurable outputs, which can be set to activate when specific conditions are detected, such as large vehicles exceeding a predefined speed.

As well as offering standard vehicle detection, the latest version of the SLD4 can also be used in specialised bus, tram and Light Rail Transport (LRT) schemes and other similar applications requiring excellent detection accuracy.

Designed for maximum reliability and using the latest inductive loop detection algorithms, the SLD4 detector family complements the company’s full range of detection options. These include Selective Vehicle Detection and above-ground detection of vehicles and pedestrians.

According to Keith Manston, 2768 Siemens Mobility, Traffic Solutions head of product management, the enhanced SLD4 still delivers the self-tuning and fully automatic set-up features of the existing SLD4, ensuring optimum and reliable performance without interference. This is said to represent a significant advantage over manual setting of frequency and sensitivity parameters which can often be a challenge, with failure to achieve this correctly causing detectors to ‘chatter’ or otherwise fail to operate.

SLD4 detectors are fully compliant with UK specification TR2512 and provide four separate detection channels with full solid-state outputs for maximum reliability. For challenging or special applications, a PC support tool enables many aspects of the detectors’ functions to be accessed for specific deployment scenarios.

The detectors may also be powered from either AC or DC supplies. Low power requirements, with operation possible at voltages as low as 10V DC, makes support within battery powered equipment a viable option where needed.

For more information on companies in this article

Related Content

  • CIFA at bauma 2025: “We Build Future. Today. Together. To All.”
    April 1, 2025

    Three new concrete machines to be unveiled at the trade show:

    1. Lizard for underground sites
    2. Energya E10, the new electric mixer with BEE technology
    3. A top-secret new machine!

    CIFA proudly announces the launch of three brand-new machines to be revealed during the show: "Underground" Lizard, "Electric" E10, and "Big" - this is the only clue about the top-secret machine that can be shared. It will be unveiled during bauma at the CIFA booth (outdoor area 1105/4).

  • Liebherr launches rough terrain cranes LRT 1090-2.1 and 1100-2.1
    March 7, 2017
    Liebherr announced at the CONEXPO-CON/AGG exhibition in Las Vegas that the company is back in the rough terrain crane market after a 30-year absence. The Swiss-based company is focusing on the North American market with the launch of two mobile crane models, said Daniel Pitzer, head of Liebherr USA.
  • Asphalt advances and industry innovations in paving
    May 20, 2014
    Asphalt paving technology continues to develop, benefiting from new technologies and new diesel engines - Mike Woof reports The asphalt paving equipment market is seeing the introduction of new low emission engines that will meet the Tier 4 Final regulations for Europe and North America. These have required some major engineering changes, with firms now having to install bulky exhaust after-treatment systems and additional cooling for engines and turbos.
  • Caterpillar’s improved wheeled excavators being introduced
    July 5, 2016
    Caterpillar is introducing its improved M315F and M317F wheeled excavators. The firm claims that the machines offer agility on site, combined with reliable performance and low cost of operation. These compact radius wheeled excavators are in addition to the conventional radius F series models, while offering compact design. The firm says that the new machines offer high performance, power and stability, featuring large working envelopes, high breakout forces, and high lifting capacities. The firm has