DD (5)'s class is taking a field trip on a bus. They're telling everyone to bring boosters, but there are only lap belts on the bus. I ever so kindly told them this wasn't such a great idea, but it pretty much fell on deaf ears. I know the research on lap belts vs. compartmentalization on busses, and I'd almost rather put DD in with NO belt than a lap belt. . I have a Radian I could put her in, but is that secure enough without a TT? I know they have very low HE numbers, but I'm wondering what the pros thoughts are on this. My other option is to drive her myself, but I know she would REALLY likew to ride the bus.