Qld blitz nabs one in five drivers for drug use

Around 700 motorists a month could be discovered to be driving under the influence of drugs once the testing program is fully implemented - and one in five checked over the long weekend tested positive for drug use.

The Queensland Road Drug Testing Unit caught 499 drivers with traces of cannabis, speed or ecstasy last month and officers expect to see that rate increase.

"Once we implement the entire (drug testing) program, we could expect to catch around 700 people a month," Sergeant Bruce McJannett said.

"We caught more than 300 people who tested positive in our unit alone."

Despite the high number of drug drivers caught, police said that the number of drunk drivers caught was decreasing.

Inspector Allan Hales of the Road Policing Command said that he had seen an increase in the number of drug drivers on Queensland's roads.

"A lot of people do take risks," Insp Hales said.

"If you're driving impaired you're going to respond slower, or you might make poor decisions because you're influenced by that drug."

Five people have died on Queensland's roads over the three-day Queen's Birthday weekend.

A 54-year-old man was killed when the truck he was driving rolled over and caught fire on the Bruce Highway, north of Gin Gin, on Sunday afternoon.

A 50-year-old man whose vehicle left the road at Laidley in the state's south, injuring a 12-year-old girl, also died about 4pm on Friday.

Last night Queensland's road toll stood at 107 for the year

Shortly after midnight on Saturday a 17-year-old driver was killed when his car hit a tree at Keperra in Brisbane's northwest after he failed to stop for police.

The Forensic Crash Unit is investigating and the Ethical Standards Command have been advised.

A man aged in his 50s also died when his car rolled at Nerimbera, near Rockhampton, then plunged down a steep embankment before hitting a fence at about 4.30am on Saturday.

Nationwide, 11 people died and 10 were seriously injured on the roads. The most recent death was a woman in her 30s who died in a collision at Beaufort, north of Adelaide, about 11am yesterday.

Victoria recorded three deaths, NSW two and Tasmania a single fatality. Last night Queensland's road toll stood at 107 for the year, up from 88 deaths at the same time last year.