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With financial and people limitations and increasing pressure on our congested road infrastructure it's no surprise to know that on-street engineering time is a major challenge for those responsible for traffic management.
The new ST950 Plus+ system from Siemens no longer uses many individual connections between signal heads and controllers; instead it uses simple four core cables and intelligent communications to reduce the installation effort, as well as saving valuable resources.
Plus+ uses dedicated failsafe controllers, signal heads, and pedestrian indicators as well as new smartloop modules ensuring that the overall system is tolerant of individual component and cable damage, resulting in higher intersection availability and reduced disruption to the travelling public.
We will be exploring the safety and system challenges which have been successfully addressed in the Siemens Plus+ system, to ensure that a distributed Traffic Control system delivers both savings in on-street implementation as well as maximum on-going availability under a wide range of possible fault conditions.
All of these factors mean that there is potentially a significant reduction in on-street working time, meaning a quicker and safer installation.
Traffic control toolset
To help simplify the design process, an AutoCAD plug-in works alongside normal site layout drawing tools to capture the full information about a junction's characteristics and component relationships. By calculating the full parameters for rings and arms (and identifying cable runs and node assignments are within design limits), the design process is made as efficient as possible. On completion of the design process, an equipment inventory and controller capacity specification is provided.
The tool set allows the installer to use the data from the design process to map physical signal heads and nodes to their use and geographical location. If needed the engineer can then adjust the configuration during installation to adapt to last minute on-site challenges or physical environment factors.
This is all backed up with bar-code scanning to ensure correct identification of components