The avg. speed in London for example is already down to 19km/h due to traffic jams. I don't see a problem with setting it to 20. You'll even reduce the chance o

The avg. speed in London for example is already down to 19km/h due to traffic jams. I don't see a problem with setting it to 20. You'll even reduce the chance of traffic jams by lowering speed limits. There's quite a pleasant traffic simulator to play with: http://traffic-simulation.de/ http://traffic-simulation.de/ https://de.statista.com/statistik/daten/studie/37200/umfrage/durchschnittsgeschwindigkeit-in-den-15-groessten-staedten-der-welt-2009/ https://de.statista.com/statistik/daten/studie/37200/umfrage...