Siemens introduces new software for “talking” traffic intersections

The city of Abilene, Texas, in the US is using new adaptive traffic control software from Siemens to increase traffic flow along a heavily travelled corridor, where two state highways meet at two intersections about 750 feet apart with elevated railroads passing between them. SEPAC Peer-to-Peer software allows intersection controllers to share information with one another on traffic and pedestrian conditions, allowing the on-street network of controllers to adaptively respond to changing traffic conditions
July 19, 2017 Read time: 2 mins
The city of Abilene, Texas, in the US is using new adaptive traffic control software from 189 Siemens to increase traffic flow along a heavily travelled corridor, where two state highways meet at two intersections about 750 feet apart with elevated railroads passing between them.


SEPAC Peer-to-Peer software allows intersection controllers to share information with one another on traffic and pedestrian conditions, allowing the on-street network of controllers to adaptively respond to changing traffic conditions in real-time.

In the field, a controller can transmit information about a large number of vehicles to a controller at the next traffic signal. This allows extra green time for the group of cars to move through multiple intersections, making traffic more efficient for operators and the travelling public.

According to James Rogge, traffic engineer for Abilene, since the implementation of the technology, the City has seen significant improvements in traffic flow through the once congested area.

The Peer-to-Peer feature gives operators a greater level of insight into traffic conditions and more accuracy in adapting traffic patterns to increase flow and ultimately reduce congestion. The SEPAC software can be installed in existing traffic controllers and requires no additional equipment or IT infrastructure.

Urban Traffic Control

For more information on companies in this article

Related Content

  • High-speed WIM moves onto the main highway
    May 24, 2016
    High-speed weigh-in-motion is starting to make its mark on both sides of the Atlantic. As a transit country the Czech Republic experiences a large number of overloaded vehicles, which greatly increase highway maintenance costs. This prompted its Transport Ministry to trial an extension of the capabilities of the existing truck tolling system to allow the dynamic high-speed weighing of cargo vehicles. In effect the tolling enforcement gantries become weigh-in-motion (WIM) locations.
    Read More
  • Control rooms adapt to tech changes
    July 8, 2019
    From IP-based systems to an increasing array of choice, traffic and transit management has changed a lot in the last few years. Adam Hill talks to some of the leading players in the control room business
    Read More
  • Radar reinforces detection efficiency
    March 16, 2016
    Radar can have distinct advantages in some transport-related situations as Colin Sowman found out during a visit to Navtech Radar. Despite tremendous advances in machine vision techniques, the accuracy and reliability of camera-based detection systems suffer during periods of poor visibility where other technologies may offer an alternative. Radar is one such technology. It too has seen significant development in recent years and according to Navtech Radar, the technology can often fulfil detection and moni
    Read More
  • Cost saving multi-agency transportation and emergency management
    May 3, 2012
    Although the recession had dramatically reduced traffic volumes in the past few years, the economy was on the brink of a recovery that portended well for jobs but poorly for traffic congestion. Leaders of four government agencies in Houston, Texas, got together to discuss how to collectively cope with the expected increase in vehicles on the road. "They knew they couldn't pour enough concrete to solve the problem, and they also knew the old model of working in a vacuum as standalone entities would fail," sa
    Read More

Highlighted Content