South Australia's opposition has poured scorn on plans to appoint a 'citizens' jury' to help cyclists and motorists get along better.

Premier Jay Weatherill says the government will invite South Australians to take part in a series of meetings aimed at finding ways to promote harmony between road users.

The jury will consist of 35 people, randomly selected from a pool of 6000 citizens.

A citizens' jury was previously commissioned to address the safety and vibrancy of Adelaide's nightlife.

Opposition spokesman Rob Lucas says the idea is a publicity stunt and a waste of money.

"Premier Weatherill wasted more than $150,000 on his last citizens' jury and this one will just be a waste of further taxpayer dollars," he said on Tuesday.

"Perhaps (he) could consider something as simple as his ministers having public meetings or forums directly with SA families."

The premier said the citizens' jury would bring fresh perspective to managing the needs of all road users and minimising conflict.

"Too often, the public debate about this issue is characterised as simply law-flouting by cyclists or callous disregard by drivers for the hazards that cyclists confront on our roads," he said.

"But a debate that pits cyclists against drivers overlooks the fact that cyclists also drive cars and many drivers ride bikes.

"There must be potential for both forms of transport to remain safe, respected and viable ways to get around and that is what we want the jury to explore."