Forcing drivers to turn on their headlights on country roads during the day and installing more overtaking lanes could improve road safety, says Police Commissioner Karl O'Callaghan.
The Road Safety Council has supported his comments urging motorists to use headlights and take more care, but chairman D'Arcy Holman said most country crashes involved one vehicle running off the road.
He said audible edge lining, widened sealed shoulders and wire rope barriers were proved measures that would save lives and prevent more injuries than putting in more overtaking lanes.
Mr O'Callaghan pleaded with motorists yesterday for patience and expressed his shock at the risks some were taking after five people were killed and another 14 were injured on regional roads in less than 48 hours.
Mr O'Callaghan said he noticed drivers still taking risks as he passed through Southern Cross after the head-on smash on Friday night which had left three men dead and 10 people injured.
He was concerned drivers were misjudging the speed and time needed to overtake trucks. "If you're unsure just wait because the consequences are far-reaching and they are for ever," he said.
Sixty to 70 per cent of fatal crashes were in regional areas, he said.
Mr O'Callaghan said driving with headlights on was a painless but effective way to enable motorists to see other cars from a long distance when they were trying to overtake.
He said police would target impatience and inexperienced drivers on country roads this summer.
Professor Holman said more than half of all fatal and serious crashes in WA involved single vehicles running off the road and funds needed to be spent where they would make the most difference.
"WA averages 365 killed and seriously injured road victims per year from single vehicle run-off-road crashes on sections of road that do not have edge linings or barriers," he said.
"This compares with an average of just two people killed or seriously injured per year from overtaking crashes on sections of single carriage road with no passing lanes."Police Minister Liza Harvey said she had not been asked to consider compulsory headlight use for daytime country driving but would be happy to discuss it.