A novel attempt to prevent stabbings in public areas could be transposed to unsafe roads, in a bid to help catch dangerous drivers.

Several states have variations of Jack's Law, which lets police wand people without a warrant in an area where serious assaults involving knives have taken place.

Road safety advocates have argued at a NSW parliamentary inquiry that a similar approach could be taken to catching speeding drivers.

The NSW government reintroduced multiple warning signs for both fixed and mobile speed cameras in 2023, at the time touting it as a transparency measure for drivers.

The Australasian College of Road Safety said suspending the warnings in areas where a serious accident had occurred could be one way of curbing a growing road toll.

"If you have an area where you've h

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