M803UYA
Member
Most double decks on the road now (built within the last 25 years) have the roofs built in such a way that they easily detach when striking an overhead object such as a bridge.The vehicle is already a convertible open topper, which may or may not have affected the ease with which to roof was torn off. Much will depend on the level of damage to the structure of the bus beneath where the roof is bolted on; as I noted above you can see in one of the images that the tops of the seats have all been damaged, and it isn’t clear at what height the bus was struck on the nearside - there may be significant damage below the window line. It’s an old vehicle, a 54 plate so dating from 2004/5.
This will explain the ease with which this one has fallen off. Given Go South Coast had a licence for 800 plus vehicles when granted in 2014 and the fleet has expanded somewhat since then I suspect the loss of one double deck might not be as easily felt as it would in a 10 vehicle operation.