They are the most precious cargo carried on four wheels but many parents are putting their kids in danger by not properly installing their car seats.

It's estimated that 90 percent of child safety seats are incorrectly installed. When the seats are put in the right way, they can reduce injury or death by as much as 75 percent.

Motor vehicle collisions are the leading cause of death and injury among children.

A volunteer organization called Seats for Kids teams up with the OPP to conduct random road-side checks of child car seats.

"We know from experience that most car seats are installed incorrectly," said Deanna Lindsay from Seats for Kids. "Not because parents don't care. There are just so many varieties of vehicles, it's hard to do it properly."

With a report from CTV Ottawa's consumer reporter Michael O'Byrne