The road toll in Western Australia is 25 to date this year after three deaths in one crash on Friday night.
AAP reports the number is almost triple that of the same time last year.
Police Minister Liza Harvey has urged all drivers to take more care of themselves and others while on the road.
"Slow down, take care and drive to the conditions. It is not rocket science," she said on Sunday.
Ms Harvey said she was considering more advertising to hammer the road safety message home.
"There are 1.6 million people who have driving licenses in WA and the government cannot be in the car with all (of them)," she said.
"We need people to take responsibility for their actions."
A woman died on Monday after a crash in Perth on Sunday night, bringing the toll to 26.
