It can be used either way. We have personally been using the RideSafer exclusively for our children, starting in 2012 when our daughter was 4 and our older son was almost 6. We began using the RideSafer for our youngest as his daily restraint when he was 3.5 years old.
We have many customers who use it as the primary restraint because they need the room it provides. Some parents who travel via taxi LOVE it because, for the first time, their child is protected in the taxi. We also have many customers who only use it for travel
And probably many others who use it somewhere in between.
