Double demerits now in force in Sydney and across NSW: What you need to know

Police will be out in force targeting speeding and distracted drivers as holidaymakers hit the roads and double demerits kick in this King's Birthday long weekend. 

Double demerits came into force at 12.01am on Friday and will end at 11.59pm Monday across New South Wales and the Australian Capital Territory.

Double demerits will be applied to all speeding, seatbelt, mobile phone, and riding while not wearing a helmet offences.

All other traffic offences will attract one additional demerit point.

NSW and the ACT are the only state and territory to have double demerits during the long weekend of June.

Western Australia has its King's Birthday long weekend with double demerits in September.

Meanwhile, Queensland's double demerits scheme targets drivers who repeatedly commit offences on the road and is applied all year round.

Tasmania, Victoria, South Australia and the Northern Territory do not have double demerits.

NSW Traffic and Highway Patrol Commander, Assistant Commissioner Brett McFadden, said police were concerned about the busy long weekend after 13 people died over the same period last year.

'Just in the past few weeks alone, we have seen multiple fatal crashes on our roads. This should not be acceptable to us as a community,' he said.

'But it is not just the responsibility of police to ensure road safety is enforced.

'I would urge anyone who is a passenger in a vehicle to call out the bad behaviour of drivers.

'You may not only save your own life, but someone else's too. It's up to all of us to do better.'