The official word from Disney is that it is not safe. I went on it (for the first time) when I was 6 months pregnant. WHen we got to the front of the line, I asked the CM about it (having not been on it before). He said that it was bumpy, and told me tht the front was the least bumpiest. So...I asked to be placed int he first row, and evrything was fine. It wasn't bad at all!