Dozens of mothers against drunk driving marched on Parliament Hill Wednesday.

Instead of preparing to spend Mother's Day with their children, these mothers carried pictures of the children they lost in collisions with impaired drivers.

The group was on Parliament Hill to raise awareness of random breath testing--which they say will save lives by making it easier for police to arrest drunk drivers.

Random breath testing would authorize police to demand breath samples from all drivers stopped at checkpoint and result in screening more drivers.

They say the current law is not an effective deterrent because the likelihood of being stopped, charged and convicted is very low.

For one of the mothers, today's march was particularly poignant. Sunday is not only Mothers Day, it also would have been her daughter' Kirsta's 22 birthday.

"At the age of 18, she was left to die by the side of the road by an impaired driver. This Mother's Day, there will be no cards, no more handprint pictures, and no birthday party. Kirsta would have been 22 this Sunday if let to live," said Kristy Ward.

With a report from CTV Ottawa's Ellen Mauro