Fresh designs of a long-awaited Sydney Road overhaul have been released by VicRoads, but permanent and protected cycling lanes are still not guaranteed.

Commuters and residents have been asked to have their say on five designs that have been released for a four-kilometre stretch of the narrow road from Brunswick to Coburg.

The RACV and Bicycle Network have wanted on-street parking on Sydney Road removed to create safe and permanent bike lanes, since cyclist Alberto Paulon was killed in 2015 when a motorist opened their car door and knocked him into the path of a truck.

But traders along the busy strip say more bike space can be created without losing parking spots.

One proposed design would elevate new tram stops and bicycle lanes between Brunswick Road and Bell Street, but on-street parking would still be available outside peak hour.