Children are much more likely than adults to get serious injuries in car crashes due to their softer bones, weaker neck muscle and fragile bodies. Child Restraint System (CRS) can help in reduce injury and prevent fatality in the event of a crash. This study aimed to measure parents’ knowledge on CRS usage before the CRS law and regulations are implemented in Malaysia. A survey addressed parents/carers’ knowledge about the “best size” ranges for restraints available in the Malaysian market, the types of restraints they were using for their children and frequency of use as well as their views on fitting restraints to vehicles. 74% out of 500 respondents cited they have had ever use CRS, and only 40% of them is currently using it with their children. 64% of them know about CRS and their function, 43% had ever heard of ISOFIX attachment system. About 70% of them choose the correct seat location, but the “best size” usage rate was found low. In conclusion, high usage rate with high incorrect usage and understanding of the CRS could promote additional injury towards the children in a car crash. Many initiatives could be introduced before the implementation of the CRS law in Malaysia such as awareness, community-based programs and CRS clinics that aim to guide parents on the correct and effective way of installing the CRS device in their car.