Fines for cyclists who break road rules should be increased to bring them closer into line with penalties drivers face for the same offence, SA's peak motoring organisation has said.

RAA road safety manager Charles Mountain said under current penalties, drivers receive a $437 fine for running a red light while a cyclist is charged just $54 for the same offence.

He said the disparity between the penalties needed to be addressed.

"The potential for both of those instances is for a serious outcome, so in those cases there does need to be a much closer alignment between the fines for cyclists and drivers," he said.

"The fines are very low by comparison to a similar fine for a motorist and same sort of thing using a mobile phone."

The call follows the introduction of the State Government's new cycling laws, aimed at encouraging more people to ride bikes.

The rule changes were prompted by a citizens' jury appointed by the Government, which came up with ways to encourage more people to ride bikes and improve the relationship between drivers and cyclists.

Under the changes, which came into effect on October 25, motorists are required to keep at least one metre from a cyclist when the speed limit is 60 kilometres per hour or under, and at least 1.5m when the speed limit is over 60kph.

Cyclists face demerit point loss in lieu of find: Minister

Mr Mountain said when similar laws were introduced in Queensland, the penalties for cyclists who breach road rules were reviewed.

"Again it's about ensuring all of the road users are sharing the space effectively and essentially everyone is playing by the same sets of rules," he said.

But in a statement, Transport Minister Stephen Mullighan said South Australia was the only state where cyclists can accrue demerit points for traffic offences.

"This means that cyclists who repeatedly break the law can lose their driver's licence or be prevented from obtaining one," he said.

He said fines for cyclists were lower because the capacity for a cyclist to cause harm is far less than it is for someone behind the wheel of a car.

"The fines reflect the fact that the demerit point system is in place and that the capacity for a cyclist to cause harm is far less than a motor vehicle," he added.

"If we see that there is a spike in behaviour which warrants reviewing the fines then we will consider it at that point in time."