I'd also add that since the bus is so heavy and carries so much momentum, it's far less likely to stop as quickly and forcefully as a car, so the actual force t

I'd also add that since the bus is so heavy and carries so much momentum, it's far less likely to stop as quickly and forcefully as a car, so the actual force transmitted to the passengers is remarkably low. I've been in an accident between a car and a bus - it wasn't very serious, but it was a good insight into the weight of the bus. The biggest clue was the noise in that case - the bus shook a bit, but nobody came out of their seats.