I'm a school bus driver. We have over 500 buses and not one has a lower bumper. The conventional buses have a higher rear end (like in the picture) where the transit style has a lower bumper. Only problem is the transit style school bus starts at 10 tons - empty. If you hit the frame, there is no give at all. The bus kind of shakes and you say "Was that an earthquake?" Then you notice, maybe... the car behind you. The bus is 8 feet wide and you can't see behind the bus very well.
Just like the crazy people who change lanes right in front of you and then slow down. No bus or 18 wheeler stops very well. Over 300 feet to stop at 55 mph.
End of rant.
