Siemens’ Plus+ simplifies signalised intersection wiring

The latest innovation from Siemens comes under the Plus+ banner and encompasses its third generation digitised traffic control system which features distributed intelligence and simplifies cabling. In place of up to 300 wire cores on a single signalised intersection, the Plus+ system uses just four cables arranged in a system of rings, arms and spurs. The four wires, two power (48V) and two data, are used to connect ‘intelligent nodes’ in each traffic light head to be connected to the central controller, re
June 2, 2017 Read time: 2 mins
The latest innovation from 189 Siemens comes under the Plus+ banner and encompasses its third generation digitised traffic control system which features distributed intelligence and simplifies cabling.


In place of up to 300 wire cores on a single signalised intersection, the Plus+ system uses just four cables arranged in a system of rings, arms and spurs. The four wires, two power (48V) and two data, are used to connect ‘intelligent nodes’ in each traffic light head to be connected to the central controller, retaining functionality while minimising wiring and greatly simplifying installation.

Beyond reducing the ducting requirements to a single duct for each run, the ring configuration means that if a cable is severed the power and data can flow the ‘other way’ round the ring to reach the controller and therefore minimise or eliminate outages.  And if a traffic light pole is knocked over, the head(s) it carries will be automatically isolated, allowing the remaining lights to function as normal.

Cost reductions of up to 20% are possible and many existing sensors (loops, push button and so on) can be connected to the system.

The company is already working on pre-wiring traffic light heads in order that electrical installation at the roadside is reduced to connecting only four wires.

Urban Traffic Control

For more information on companies in this article

Related Content

  • B&C Transit modernises Miami-Dade Metrorail’s control systems
    June 1, 2016
    Jason Gomez and Daniel Mondesir describe how passenger disruption was minimised during a major upgrading of the control room of Miami-Dade’s Metrorail. In 1984 when the Miami-Dade Department of Transportation and Public Works’ (DTPW) Metrorail system was launched in southern Florida, trains ran 18km along a single line and stopped at 10 stations.
    Read More
  • LiDAR sets its sights on future problems
    February 23, 2017
    AAdvances in LiDAR are helping transport authorities improve services and identify potential problem areas, as geospatial technology expert Dr Neil Slatcher explains. The effects of climate change on the transport infrastructure have long been a cause of concern within the transportation sector - and not only on the structures themselves but also on the surrounding areas. This year, those concerns have become reality with landslides, structural collapses and surfacing issues impacting services across the wo
    Read More
  • Migrating to advanced traffic management systems
    March 14, 2012
    Rich pickings of reduced cost and greater value are up for grabs as highway authorities migrate to new traffic management systems – if they choose their paths wisely. Jon Masters reports. Experience gained and expertise developed over the past decade are informing good advice for transport agencies contemplating new or expanded traffic management systems. Technological projects aimed at reducing road congestion may be frequently unique and invariably complex, but a picture is emerging of sensible, prudent a
    Read More
  • Integrating traffic management and tolling technologies
    April 25, 2013
    Jamie Surkont, head of road safety enforcement with Kapsch, outlines the company’s efforts to set up and align new traffic management business units with its more widely recognised tolling expertise The blurring of ITS applications’ edges brought about by systems’ increasing functionalities will ensure that many of the technologies which we have come to rely on for road and traffic management will find it increasingly difficult to exist or operate within tight market verticals. At the same time, systems man
    Read More

Highlighted Content