Traffic control application

Optimal use of road capacity

With roads becoming more congested, travel times are increasing. Possibilities for expanding infrastructure are limited as many environments have no space for new infrastructure or cannot afford the high costs of adaptations. Increasingly, people are asking: ‘Isn’t there a smarter way?’ The answer: Yes, there is! Smarter handling of the available road capacity can lead to better utilisation. ImFlow offers a range of control modes for use in different traffic scenarios. Through intelligent management of available road capacity, ImFlow optimises traffic flow and can even eliminate the need for major investments.

Policy-based traffic control

ImFlow is a software platform containing state of the art control algorithms to calculate the duration that traffic lights need to be green for. The optimisation is executed every second. ImFlow does not require a traffic control centre for optimisation however, the optional control centre provides information about traffic performance at intersections. The philosophy behind ImFlow is enabling road authorities to control traffic based on their traffic policies. The policy objectives and parameters form the basis for control. Road authorities can configure requirements such as environmental targets, smooth traffic flow on key routes, prioritisation of public transport or stimulating cycle flows. These policy requirements are entered into the system and appear as ‘sliders’ in the console. By removing the current need for detailed parameter knowledge, ImFlow is easy to use for both engineers and policymakers.

Control modes

The ImFlow platform has three primary control modes that can be configured to fit the traffic scenario. These modes provide the flexibility and manageability to address future changes in traffic scenarios and policy.

  • Adaptive optimisation: This algorithm optimises traffic, based on real-time traffic intensity and predicts traffic situations in the immediate future. The queue algorithm provides ImFlow with real-time data on the road capacity. This way ImFlow enables the optimal use of available space. By calculating the actual saturation flow, ImFlow will instantly respond to incidents and changing weather conditions.
  • Local optimisation: This algorithm optimises flow, based on traffic presence. Green times are adjusted in line with realtime traffic volume to provide dynamic local control.
  • Green wave optimisation: This algorithm optimises traffic across a series of intersections to create a green wave for traffic along one or more routes. The algorithm selects the right plan to optimise the green wave based on real-time traffic flow or a time schedule.

Read more about ImFlow in our brochure.