Alcohol is becoming less of a factor in serious Tasmanian road crashes, but the same cannot be said for illicit drugs.
Drugs and alcohol were a contributing factor in an average of 26 per cent of serious and fatal injury crashes in Tasmania in the past 10 years, police say.
"There has been a reduction in the percentage of cases where alcohol was a factor over that time, but drugs have remained relatively constant," Acting Inspector Darren Woolley, of the police Western District, said.
He was speaking after Tasmania Police statistics showed police had caught more drug drivers than drink drivers in the 11 months to the end of May.
They caught 2206 drug drivers, at an average of more than six per day.
"Tasmania Police continues to target drug drivers, as driving while affected by drugs is a high-risk behaviour," Acting Inspector Woolley said.
Tasmania Police continues to target drug drivers, as driving while affected by drugs is a high-risk behaviour.Darren Woolley
He said police used a range of strategies to focus on high-risk driving, with the aim of modifying driver behaviour.
"The detection of people who choose to drive after consuming illicit substances continues to be a priority for police and one of the focuses of our intelligence-led road safety strategies," he said.
He said Tasmania Police used the Drug Wipe 5S OFT, which detected the presence of cannabis, amphetamines, methamphetamines/ecstasy, cocaine and opiates.
"Changes to roadside drug testing came into effect late last year," he said.
"This means police officers are now able to collect oral fluid samples from drivers who return a positive result to a roadside drug test, instead of the driver being required to provide a blood sample.
"The new process replaces the previous requirement for police officers to attend hospital with the driver and wait for blood samples to be taken.
"Importantly, the changes free up police to get on with their job of helping keep our roads safe, instead of waiting with drivers at hospitals while a blood sample is taken.
"It's quicker, easier and more efficient for everyone involved."