Cyclists will make up a quarter of morning traffic into the city centre by the end of the decade, if the City of Melbourne's latest four-year bike plan meets its ambitious target.

The plan would mean 20,000 cyclists would enter the city each morning, up from 12,000 today.

Two thousand new bike hoops for parking will be planted in busy parts of the city. Some will be installed on the footpath, while others will replace on-street parking spaces, on the grounds that a parking space can fit five bikes for just one car.