Photo by A 'snooze-alyser' is being developed that will tell you if you're too sleepy to drive.
Researchers are working on a roadside blood test to detect tiredness in motorists, which could lead to prosecutions for those causing accidents when sleep-deprived.
Monash University in Melbourne is developing the tool, as evidence shows driving on less than five hours sleep could be as dangerous as being over the drink-driving limit.
The Road Safety Authority says driver fatigue is a factor in one in five crashes every year.
The Mail reports more work is needed to see if the test can quantify exactly how long someone has slept for.
