STREAMS Integrated Intelligent Transport System

STREAMS® Integrated Intelligent Transport System is an enterprise traffic management system designed to operate in the Microsoft Windows environment. Like most traffic management systems, STREAMS® is an array of high-quality, intuitive, interactive, ITS ( intelligent transport systems ). ITS is an umbrella term referring to the implementation of information and communications technology to transportation operations in order to Reduce operating costs, [1] Improve safety and maximizes the capacity of Existing infrastructure. STREAMS® provides traffic signal management, [2] traveler information, flood monitoring [3] and parking guidance within a single integrated system. [4] STREAMS® is developed by Transmax® .

History

In 1969, the Department of Main Roads (Queensland) installed the first Intelligent Transport System in Australia (located at Surfers Paradise ). This included 30 signalised intersections featuring centralized control and traffic responsive capabilities.

In 1985, a second generation traffic management system was installed in Cairns , Australia . This was known as TRAC System, or Traffic Responsive Adaptive Control System. Progressive installation of the TRAC system at Followed Several more locations around Queensland Including the capital city, Brisbane .

In 1988, a traffic management system was installed for the South East Freeway in Brisbane , Australia . The features included were ramp metering and graphical displays of traffic conditions. It also provided automatic incident detection.

In 1992, a new integrated intelligent transport system was started. ITS applications. ITS applications. The resulting system was STREAMS®.

In 2002, the Division of Department of Main Roads (Queensland) was responsible for the continuing development of STREAMS®, ​​which was privatized to Transmax . The company remains 100% owned by the Queensland Government Department of Transportation and Main Roads .

In April 2007, Transmax® in partnership with VicRoads implemented a coordinated ramp metering trial in Melbourne , Victoria on a 15 km section of the Monash Freeway . [5] Later that year, in December, VicRoads installed STREAMS® to manage another six ramps. [6]

The National ITS Australia Award was awarded to the National Institute for the Development of Sport. The project to upgrade the 75-kilometer M1 Freeway, increase the capacity and safety of the Monash Freeway, the CityLink Tollway (Southern Link) and the West Gate Freeway using STREAMS® as the Integrated Control System. [7]

In 2016, Transmax partnered with Parsons Brinckerhoff to trial STREAMS® motorway management functionality for the Utah Department of Transportation in the USA. [8]

Software Architecture

STREAMS® employs distributed computing software architecture . [9] Field hardware such as intersection controllers, video cameras and speed detectors are connected via field processors back to a central application server . Users connect to the application server via the workstation software. Field communications are via Optical Fiber , DSL , or Wireless connections.

The software is built in separate modules for each distinct area of ​​traffic / transport control and monitoring. The workstation software communicates to the application server software via a publisher / subscriber model (ie workstations subscribe to the requested server ).

The software architecture is designed to model the software media’s claim of being white year “integrated” Advanced Traffic Management System . [10] This breaks away from the inter-operability model, which is multiple ITSsystems working in parallel, each performing a discrete function.

The workstation software is built around a central user interface called “STREAMS® Explorer”. Other specification / reporting applications can be launched from STREAMS® Explorer.

The transport network is set up via a GIS ( Geographic Information System ). The GIS Allows for a graphical user interface displaying transportation network data overlaid on street maps and updating in real-time.

Adaptive Traffic Management

STREAMS® implements adaptive traffic management through a feature called “Dynamic Plan Selection”. [11] Depending on the density of traffic (occupancy) and the dominant direction of traffic (for example, inbound, outbound, or bidirectional). A user sets up the signal timing , and picks the traffic density levels and direction that they apply to. Selecting the appropriate signal timing is then automatic. STREAMS® Dynamic Plan Selection can adapt to unexpected traffic levels as they arise.

With help from the academic community, STREAMS® Managed Motorways offers the coordinated ramp-metering algorithm suite ALINEA / HERO. [12] The modular architecture of STREAMS® allows Transmax to integrate new algorithms as they become available. STREAMS® Applies to the computed metering rates using ramp signal controllers deployed at the roadside. Controlling multiple consecutive ramps, ideally the whole motorway, makes it possible to maintain a more consistent motorway and prevent flow breakdown. Using HERO, STREAMS® is able to balance tails across multiple ramps and maximizes motorway performance.

See also

  • Traffic Management System
  • Intelligent Transport Systems
  • SCATS®
  • BLISS
  • Geographic Information System
  • ITS Australia

References

  1. Jump up^ http://www.audit.vic.gov.au/publications/20140611-ICT-Improve-Traffic/20140611-ICT-Improve-Traffic.html
  2. Jump up^ https://www.itnews.com.au/news/queensland-trials-intelligent-traffic-lights-320317
  3. Jump up^ https://s.campbellsci.com/documents/au/technical-papers/road_flood_monitoring_systems.pdf/
  4. Jump up^ “Improved travel time reliability for Sandgate Road and Mains Road traffic” , Queensland Department of Main Roads Statement , 21 September 2008
  5. Jump up^http://www.itscosts.its.dot.gov/ITS/benecost.nsf/ID/54FB7C34AC9B6A5D85257D6B006CD136?OpenDocument&Query=BApp
  6. Jump up^ “On-ramp to success”, Traffic Technology International , October-November 2009
  7. Jump up^ Melbourne’s M1 freeway upgrade and SUNA Traffic Channel win ITS Australia Awards
  8. Jump up^ http://roadsonline.com.au/usa-to-trial-qld-congestion-busting-technology/
  9. Jump up^ http://www.transportationgroup.nz/papers/2007/A4a_Verma.pdf
  10. Jump up^ http://www.hothousedesign.com.au/blog-layout/schematics-in-the-media#.WMheaWf-sY0
  11. Jump up^ http://www.audit.vic.gov.au/publications/20140611-ICT-Improve-Traffic/20140611-ICT-Improve-Traffic.html
  12. Jump up^ http://docs.trb.org/prp/14-0992.pdf

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