Road Safety Council chairman Murray Lampard has backed Seven West Media's Pledge for Nate campaign and pleaded with West Australians to stay safe over the festive season.
The State's fatal crash statistics for this year are down about 10 per cent on recent years but Professor Lampard issued a stern warning ahead of the holiday period.
There have been 149 deaths on WA roads this year, compared with 167 deaths at the same time last year.
The former deputy police commissioner said an average of 19 people had been killed in car accidents each December for the past five years.
"Road deaths and serious injuries can be prevented if we all make the conscious decision to prioritise road safety," Professor Lampard said.
"Christmas is a wonderful season for everyone to relax and catch up. There is no reason it should come at a personal cost or at the cost of other people."
He urged everyone to sign the Pledge for Nate and take a stand against drink-driving.
"It's an absolute tragedy that this stance has come at the cost of an innocent child," Professor Lampard said. "I commend Stacy and Justin Dunbar for their strength in an extremely difficult time in their lives.
"The sad reality is that there are horrific consequences suffered by many in the wake of such a tragedy. One bad decision can lead to years of devastation, especially for those who have lost a loved one.
"We all have a part to play to ensure people start taking a stand against drink-driving, so I encourage everyone to support this campaign."