I began the process by making sure that I had exhausted all creative possibility from the backpack, to look for any function/ features which could be combined with the constricting straps so that the bag could assist with pedestrian safety in more than one way.
I then analysed all of the current issues with the concept, and how began to ideate solutions to each of these problems. Some of these solutions created problems in themselves, which I also attempted to solve in the diagram.
The Revised Concept
By summarising all of the solutions to each of the problems above, a new key concept is created. The image to the right shows this. The images below show some investigative sketches into Shape, Attachment methods and Power Sources.