[kruczek]

> Plus car drivers are advised to give a bike the same room as a car, so on mixed use roads a bike effectively takes up the same space as a car.

Yes, that is one case. On the other hand:

1. The fact that such advices are given doesn't mean they are followed. I also heard that car drivers are supposed to leave at least 1 meter of space between themselves and a bike when overtaking said bike. In my experience that happens only on an empty wide road; otherwise car drivers won't hesitate to overtake as close as possible.

2. In case of bike lanes, bikes obviously do take much less space, both when driving and when queuing.

3. Even in case of mixed road, there may be multiple bikes which do not need to stay so far away from each other.

4. Also on mixed road, when queuing together with cars, bikes will usually position themselves alongside cars, therefore effectively taking zero space in the queue.

5. Finally consider also requirements for parking. A single car parking space could probably fit 10 bikes.