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You need:

- physically separated bike lanes wide enough for safe overtaking, with a gap between them and a parking lane that protects cyclists from open car doors and people leaving the car from cyclists

- an actual network of bike paths instead of vanity paths

- redesigned intersections that are safe for cyclists (https://en.wikipedia.org/wiki/Protected_intersection)

- bicycle storage infrastructure in apartment blocks (not everyone has a suburban garage)

- bicycle storage infrastructure in office blocks

Painted bike lanes do not feel safe enough to most potential cyclists so they don't lead to much modal shift.

What if they added posts? Either metal driven down into the road that a car would not go through or plastic ones that would deter a driver from running into them? I think that would provide more of a sense of physical separation.

They have been doing this in London. I think it makes a big difference! It also prevents people from parking in the bike lane.

We're really bad at step 2 in NYC. Bike lanes are just additional parking spaces.

Step 3. Build bike cages so you can safely park bikes w/o worrying about theft.