Probably need two in case multiple emergency vehicles need to be on the scene. Imagine a bombing - you need ambulances, fire trucks, police, etc. That's easy with huge car-based infrastructure but a bike-city seems complicated.
Unless you just build huge roads everywhere despite the lack of cars, which would be sad.
Probably need two in case multiple emergency vehicles need to be on the scene. Imagine a bombing - you need ambulances, fire trucks, police, etc. That's easy with huge car-based infrastructure but a bike-city seems complicated.
Unless you just build huge roads everywhere despite the lack of cars, which would be sad.
Fine, two. Two-lane, no parking roads are still only a third of the size of four-lane roads with parking on both sides.
Eliminating parking space for cars would be huge.
Might be able to cheat a little with the gravel shoulder, so it's "two lanes" but only if vehicles on the left and right dirve half-off the road.