A 15 per cent drop in collisions between bicycles and cars in NSW during a two-year trial of minimum gaps for motorists passing cyclists has led to a permanent rule change.
Motorists passing a cyclist travelling in the same direction must do so at a minimum distance of one metre when the speed limit is 60km/h or less, and 1.5 metres when it is higher than 60km/h.
Minister for Roads Melinda Pavey said on Wednesday the trial results also received broad support across both the cycling and motoring public.
"We all have to be able to use this space safely," Ms Pavey told reporters in Sydney.
The law will allow drivers to cross the centre white line when passing a cyclist, if the road ahead is clear.
Motorists who break the Minimum Passing Distance Rule face a penalty of $330 and two demerit points.