> You do realize that the traffic will be moving at the speed of walking then, or ? walkable paths do not usually overlap with cars/bicycle lane/bus lanes. bu

> You do realize that the traffic will be moving at the speed of walking then, or ? walkable paths do not usually overlap with cars/bicycle lane/bus lanes. but they are very effective to reduce the use of vehicles for routine activities (grocery, schools, catching public transport, meeting friends, going out for a drink, etc.) Also traffic speed is actually not that relevant, in Rome, where I live, most of the time cars move at an average speed lower than 10 km/h, the real issue is avoiding congestions, not making cars move faster. 15-20 km/h is more than enough to do what you have to do in a reasonable time. where I live in Rome to reach the station I can either take the subway (5 stops, 11 minutes), the bus (~20-25 minutes), a cab (~15-20 minutes) or my car ~30-35 minutes and forget about parking it. fast tracks for cars can be moved outside of the city, like the great ring around Rome. https://en.wikipedia.org/wiki/Grande_Raccordo_Anulare https://en.wikipedia.org/wiki/Grande_Raccordo_Anulare