Police remind drivers: 'Stick to the speed limit'
SLOW down. It's a message police try and reinforce every Christmas holidays.
On the weekend, three NSW families were faced with the devastating reality of what could happen when drivers failed to listen.
Police believe speed was a factor in a crash which claimed the life of a Sydney teenager and left two others with permanent injuries.
An 18-year-old woman was killed when her car smashed into a power pole near Terrey Hills.
The 33-year-old male driver suffered significant brain, spine and rib injuries and his 30-year-old back-seat passenger had his leg amputated.
Both men remained in a critical condition on Monday.
NSW Traffic and Highway Patrol Superintendent Stuart Smith told reporters he did not know how many times he would have to say "stick to the speed limit".
"Every year, hundreds of people die and thousands of people are horribly injured as a result of speeding on our roads," Supt Smith said
"Breaking the law while in control of a vehicle can have life-changing consequences," he Smith said.
"You could end up dead, you could lose your ability to walk, or you could end up spending a number of guilt-ridden years behind bars."
A number of highway traffic operations will be under way throughout the Christmas holidays.
Double demerit points will apply for speeding and seatbelt offences.