EXPLAINER ·
Why better traffic decisions need a wider view
A junction is part of a journey. Its effects continue down the road.
The next junction is part of the picture
Releasing traffic at one intersection means sending it somewhere else. If the next section cannot receive it, clearing a local queue may simply move the problem down the road.
That is why SIPD-M looks beyond the individual traffic light. Its network perspective considers how connected intersections influence one another, where capacity remains available and where queues can spread.
Explore before intervening
The first city validation model uses observation and simulation to compare possible improvements. It does not change live traffic-light rules.
The purpose is to understand whether a local opportunity could be useful for the wider network, while keeping safe operation and unclear conditions in view. A city is also more than cars: suitable data can progressively bring other road users into that understanding.
Better optimisation is not simply more green time. It is a better-informed view of how the network works as a whole.