The leader of the Reason Party and cannabis advocate Fiona Patten has described how she “wore down” state authorities in her battle to end the discriminatory drug-driving laws in Victoria.

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But she warned the road to reform could still be “rocky” and stressed the police should not be allowed to dictate state laws.

Steve has reported for a number of consumer and B2B titles over a journalism career spanning more than three decades. He is a regulator contributor to health journal, The Medical Republic, writing on...