One of the greatest investments that parent make is to pick the right car seat for their baby. 5 percent of the time, according to a 2005 study by the National Highway Traffic Safety Administration. This study claims that the parents who meant well subjected their child to a potential amount of harm by not restraining their child in a proper fashion. Problems were discovered in the looseness of both the safety belts and the harness straps. These mistakes, the ones that almost every parent makes, are the ones that the NHTSA say can be the most ‘critical.