Police have urged Canberra drivers to slow down, following a horror weekend on ACT roads.
The warning comes after three serious incidents involving high speed and alcohol in as many days.
In one incident, a 17-year-old P-plate driver remains in a critical condition in hospital after crashing a car into a tree in Duffy in the early hours of Sunday morning.
Police have said speed was a significant factor in the crash.
Another 17-year-old was fined more than $4000 after he was seen speeding 62km/h over the limit on Horse Park Drive on Friday night.
The teenager was riding a motorcycle, which was unregistered and uninsured, travelling 142km/h in an 80km/h zone.
In another incident, a 31-year-old man rolled the ute he was driving near Canberra Airport. An adult passenger and two children were in the car at the time.
The man later recorded a blood-alcohol reading of 0.212, more than four times the legal limit.
The driver is set to appear before the ACT Magistrates Court at a later date.
ACT police detective sergeant Marcus Boorman said officers had become extremely frustrated with speeding and drunk drivers on the road.
"I don't know what more police have to say and how many pleas we have to make to motorists out there," detective sergeant Boorman said.
"There is no excuse, and we're asking motorists out there to take care on the road. Speed limits are not negotiable.
"Unfortunately we are seeing this behaviour fairly regularly, and that's very unfortunate."
Detective sergeant Boorman said the drivers in the three incidents over the weekend were lucky to be alive.
"Look at the collision with the young children in the car, and they were very lucky, and the driver was an idiot," he said.
"The difference between life and death is minimal, sometimes it's a matter of inches."
As more drivers hit Canberra roads during the busy school holiday period, ACT police have said they would be targeting driver behaviour and speeding.
"We're constantly reassessing operation activities, but what we're doing is focusing significantly on not only major arterial roads but all roads in the ACT," detective sergeant Boorman said.