01 · Intersection
PTV Epics
Optimises a single intersection according to local traffic demand.
SMART LIGHT
Adaptive Traffic Control
Signal timings that follow real traffic demand.
Adaptive control uses detector data to adapt how each signal group is served to the traffic actually present, and to coordinate intersections across the network. The goal: more efficient use of the road capacity a city already has.
How the system is structured
02 · Zone or corridor
PTV Balance
Coordinates a group of intersections according to network load.
03 · Network
SAUS
Monitoring, controller programming, remote commands, reports and coordination.
Discover SAUSWhat adapts: cycle length · green times · green-time offsets.
From survey to live operation
- 01
Preparation
Base data and traffic counts. Signal plans and the network modelled in LISA and PTV Visum.
- 02
Simulation
PTV Vissim, to test the solution and tune the control parameters.
- 03
Commissioning
Parameters transferred: EPICS on the controller, BALANCE on the server.
- 04
Monitoring
Tracked in SAUS. The PI (performance index) shows the effect of the optimisation.
Feedback loop
Detector data updates the origin–destination matrix and calibrates the model, and control parameters are re-checked in simulation.
