I got this little roller coaster for my twin nephews who will be 3 soon.  They love it!  They are able to get on and off all by their self and have big smiles on their faces when they ride it.  At the top of the roller coaster the back wheels of the car have a little spot that it sits in.  so they can safely get on it without it starting to go.  they just have to do a little scoot forward or I give them a push to get going.  great purchase.  Great quality.  and it all comes apart easily for storage.  I highly recommend this for kids.