020406080100120140050010001500200025003000free flow, 105 km/hcongested branchcapacity 2730 veh/hat 26 veh/kmcapacity drop: flow just pastcritical never returns to the peakdensity (vehicles per km per lane)flow (vehicles per hour per lane)Two regimes, not one curve with noise around itfree flow, 105 km/hcongested branch11010010005-min intervals