A move by the Greens to make medicinal cannabis use a defence against a drug-driving conviction has been voted down in the New South Wales state parliament.

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The amendment to the Road Transport Legislation Amendment Bill, moved by Greens Member of the Legislative Council David Shoebridge, stated: “It is a defence to a prosecution… if the defendant proves to the court’s satisfaction that… the presence in the defendant’s oral fluid, blood or urine of delta‑9‑tetrahydrocannabinol was caused by the consumption of a substance for medicinal purposes.”

Prior to launching Cannabiz, Martin was co-founder and CEO of Asia-Pac’s leading B2B media and marketing information brand Mumbrella, overseeing its sale to Diversified Communications in 2017. A journalist...