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

  • Siemens technology installed on UK connected vehicles project
    November 14, 2016
    Siemens’ Sapphire journey time measurement system for traffic monitoring using Bluetooth technology is being installed on three main corridors into the centre of Coventry as part of a new UK project to assess how connected vehicles interact on key corridors leading into the city centre from the national road network. Led by Coventry City Council, the intelligent variable message systems (iVMS) project will draw expertise from Coventry University’s Centre for Mobility and Transport in collaboration with
  • Swarco speeds Paris traffic management
    December 23, 2021
    Work is part of wider contract with Cielis consortium in advance of 2024 Olympics
  • Making SMART Signal even smarter
    April 20, 2015
    According to researchers at the University of Minnesota, most traffic signals in the US are only retimed every two to five years (or longer), largely due to the expense associated with retiming efforts. However, over the past several years, University of Minnesota researchers have developed and refined its SMART Signal system to make it easier and less expensive to retime signals. The system, developed with funding from the Minnesota Department of Transportation (MnDOT), not only collects traffic and si
  • ITS Australia Awards 2025 finalists announced
    November 13, 2024

    ITS Australia has announced 32 finalists for the 15th Annual ITS Australia Awards, with winners announced at a ceremony on 13 February 2025 in Perth, Western Australia.