Controversial new bicycle regulations that allow cyclists to ride on footpaths and threaten to fine drivers for overtaking incorrectly will be subject to another round of public consultation, the South Australian Opposition says.

The rules came into effect on Sunday and were a result of recommendations made by a citizens' jury.

They allow cyclists to ride on footpaths and require motorists to leave a one-metre gap when overtaking cyclists at speeds below 60 kph, or a 1.5m gap at higher speeds.

The Liberal Party has launched its own public consultation process after claiming the citizens' jury did not allow for proper consultation.

This included the distribution of "tens of thousands" of flyers across the state requesting "feedback from people".

Opposition Transport spokesperson Corey Wingard said amendments to cycling laws could not be made before they were introduced because the "Government pushed this through as regulation and not as legislation".

"That means there has been no opportunity to debate this in the Parliament," he said.

The Opposition and independent MP John Darley have both tabled separate motions in Parliament to have the laws disallowed.

The motion is yet to be voted on, but if successful it would see the laws overturned.

"The 30 people and the butcher's paper for the citizen's jury hasn't appeased people," Mr Wingard said.

He said his office and other party members had been contacted by the public who were confused about the issue.

"They aren't comfortable with these changes to the regulations," Mr Wingard said.

"They've got a lot of issues they want raised and they want looked at."

Transport Minister Stephen Mullighan said an extensive public consultation process took place in March and had received more than 1,500 responses.

"It is stunning to think that after 10 months of knowing these laws were coming, the Liberal Party still hasn't yet finalised its position and is waiting for a group of people to tell them what they should and shouldn't be doing," he said.

"Last week the Opposition seemed to indicate they supported them and this week they seem to say they don't. They seem in absolute chaos when it comes to being able to make up their mind."

Mr Wingard said the citizens' jury had discussed riding on footpaths where it was safe.

"[But] when the regulations come out it is said people can ride on footpaths at an unvetted speed limit," he said.

"That was never what the citizens' jury recommendation was."

The increasing popularity of road cycling in Adelaide has brought with it tensions between road users, particularly on stretches of road where bike lanes are inadequate or non-existent.

A law that allows cyclists to ride two abreast has also caused particular angst for drivers, particularly on winding roads or thin roads where cars are blocked by riders unwilling to ride single file.

The new rules allow vehicles to cross centre dividing lines and straddle lanes to pass cyclists, provided a driver has a clear view of any approaching traffic.