A new study from the Colorado Transportation Department says more than half of the children who died as passengers on state roadways last year were not restrained in safety seats, booster seats or seat belts.
In all of 2004, 29 child passengers under age 16 died in traffic crashes. Sixteen of them were not restrained.
The figures come at the same time that national reports show that less than 20 percent of children who should be using booster seats -- an intermediate step between safety seats and seat belts -- are actually using them.
Experts say children should ride in booster seats until they're 4'9" tall, and all children 12 years old or younger should ride in the back seat.