Skip to main content

GPS-based virtual detection zones improve bus travel times

San Antonio, Texas’ new Via Primo will be kept on schedule with minimal impact on individual traffic flow with the implementation of a GPS-based bus rapid transit system that allows the bus to automatically request a green light when it is behind schedule and approaching a busy intersection.
July 5, 2013 Read time: 2 mins
San Antonio, Texas’ new Via Primo will be kept on schedule with minimal impact on individual traffic flow with the implementation of a GPS-based bus rapid transit system that allows the bus to automatically request a green light when it is behind schedule and approaching a busy intersection.

189 Siemens Road and City Mobility business has worked with 629 Trapeze Group to create the new transit signal priority (TSP) solution which uses a ‘virtual’ GPS-based detection zone for transit vehicle traffic management without requiring physical detector equipment at the intersection.

The intelligent transportation system operates through Siemens NextConnect software and Trapeze Group’s GPS system. When a bus is in a virtual detection zone, the transit system sends a signal priority request to the Siemens i2 traffic management system. The request is relayed to the intersection traffic controller which requests the traffic system to provide a green light for the approaching transit vehicle

Identifying the need for a new bus rapid transit (BRT) system, San Antonio’s Via Metropolitan Transit wanted to avoid the construction delays and increased costs associated with adding new hardware on the street. The ‘virtual’ detection zones are installed digitally on city traffic servers and are easily adjusted in response to changes in traffic flow due to special events or construction. The flexibility also means VIA and the city can add BRT lines around the region by simply creating a new route and configuring the new detection zones accordingly.

“This solution allows passengers to get to their destination on time, and it will ultimately encourage more usage of the bus system as reliability improves, reducing congestion and greenhouse emissions as people switch from car to bus travel,” said Frank LoPresti, vice president of Siemens Road and City Mobility business.

“Via has been a valued Trapeze customer for more than fifteen years, and they are an award-winning agency for good reason. Their systems and processes are state of the art, and their customer-centric focus is to be applauded,” stated John Hines, president of Trapeze Group.

For more information on companies in this article

Related Content

  • Coventry City Council chooses Siemens for traffic signal refurbishment project
    October 26, 2017
    Siemens has been awarded a contract by Coventry City Council (CCC), through the National Productivity Investment Fund, to design and refurbish traffic signal equipment and systems at nine signalised junctions in the region. CCC is renewing life-expired traffic control equipment with the latest designs and management systems to improve network performance and reliability and reduce maintenance costs.
  • 50 years of Cubic Transportation Systems
    August 25, 2022
    If you detect an air of celebration on the Cubic stand, there’s a good reason for it. June 2022 marked 50 years of Cubic Transportation Systems. While Cubic Corporation started 70 years ago, the transportation business began in 1972 and has since been nurtured and developed into a successful $1 billion enterprise and an established leader in the transportation industry.
  • New solutions for catching texting drivers
    October 28, 2016
    Many countries have laws prohibiting texting while driving but enforcement is proving difficult – David Crawford looks at some new approaches being tried by authorities. Finding definitive solutions – technological, regulatory and educational - to the potentially lethal practice of people driving while using mobile phones is proving elusive, while the stakes grow higher.
  • Debating road user charging systems
    January 26, 2012
    Are pre-launch trials of charging systems the way to improve public acceptance? Or is the real key a more robust political attitude? Here, leading system suppliers discuss the issue. The use of distance-based Road User Charging (RUC) is now well established, at least for heavy goods vehicles on strategic roads. However demand management for all vehicles, whether a distance-based charge or some form of cordon scheme, has yet to make significant progress. This is in spite of the logic and equity of RUC being