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

  • Wavetronix radar-based traffic sensor cuts costs
    May 30, 2013
    While initial cost of radar based detection may be higher than that traditional loops, lower maintenance costs more than balance the books. Following successful field tests, the US city of Greenville, North Carolina, has recently agreed a new policy of phasing in Wavetronix traffic sensor technology’s radar-based SmartSensor Matrix system across its signalised traffic intersections. City traffic engineer Rik DiCesare expects the incremental implementation to deliver benefits to both the city’s taxpayers an
    Read More
  • Free-flow upgrade to Holland's Westerschelde tunnel's toll system
    February 1, 2012
    Unbroken service Technolution's Winifred Roggekamp and Dave Marples describe efforts to upgrade the Westerscheldetunnel's tolling system to give free-flow capability. Until 2003 the Flanders region of Zeeland, in the south-west of the Netherlands, was connected to the mainland only by ferry. The new Westerscheldetunnel, a 6.6km toll tunnel, improves communications with the region considerably, taking some 100km off the alternative road journey. In 2006 it was recognised that the toll plaza for the tunnel ne
    Read More
  • Yunex shrinks to Plus+ size
    September 1, 2022
    ST950S and ST950SP cabinets have reduced footprints designed for small junctions
    Read More
  • Siemens delivers pedestrian countdown at traffic signals
    November 30, 2015
    First shown at Traffex 2015 in April, production of Siemens’ new Pedestrian Countdown at Traffic Signals (PCaTS) is now fully under way. PCaTS informs pedestrians how long they have to cross the road after the far-side green man signal has gone out. By providing a visible countdown of the time remaining before the appearance of the red man, PCaTS is intended to give pedestrians a better understanding of the time available to complete crossing, reducing anxiety once the green man is no longer displayed. B
    Read More

Highlighted Content