Stay alert: message to NSW drivers

NSW drivers are being urged to make wise decisions on the state's roads during the June long weekend.

Double-demerit points will be in force for four days as NSW Police urge motorists to remain alert over the Queen's Birthday weekend.

From Friday there will be more police on roads targeting drivers for dangerous behaviours, including speeding, drink and drug-driving, mobile phone use and not wearing seatbelts, police said on Thursday.

Operation Stay Alert kicks off at 12.01am on Friday and runs until 11.59pm on Monday.