Fig. 2From: Integrating mobility data sources to define and quantify a vehicle-level congestion indicator: an application for the city of TurinValues of the worst RKPIj,k for the arcs of the city newtork in the time ranges 8:00–8:59 am (a), 9:00–9:59 am (b), 5:00–5:59 pm (c), 6:00–6:59 pm (d). Different colours of the arrows represent different values of the indicator according to the scale in figure (a)Back to article page