Death crash doesn't slow speeders

Drivers caught speeding past fatal crash site.

WA's top traffic cop says his officers have been left frustrated and sickened after nearly a dozen drivers were caught speeding in the exact spot a fatal crash happened just 24 hours before.

Christoper Tirant, 43, was killed when his truck collided with a prime mover along Karnup Road in Serpentine on Tuesday morning.

A day later police conducted a speed detection operation over a three hour period and caught 11 road users allegedly speeding on the road.

Assistant Commissioner Nick Anticich said when those drivers were asked whether they knew about the tragic fatal crash that had happened the day before, 10 said yes.

"It is frustrating for us as police to deal with this sort of behaviour, horrific and as sickening as it is for us to turn up to these fatalities and deal with the consequences of it, it is more frustrating for us to deal with this sort of attitude," he said.

"When you see behaviours like this the day after a fatality, within 24 hours, the wreckage is barely cleared from the road, it beggars belief," he said.

Mr Anticich said the last ten days had been horrific with nine people killed and a further three people seriously injured.

"The public of Western Australia, the drivers, the road users have to step up and confront the real issue here that is they are the primarily people that can change or turn this road toll around."

Mr Anticich said quite often officers were criticised for policing the road rules but driver attitudes like those displayed in the Serpentine operation justified their no excuses approach to road safety.

"People you have to drive to live, don't drive to die and that's what we're seeing more and more of, we can only do so much and it's really in your hands to do something about this," he said.