A colleague and I are doing a project on cycling in Philadelphia. We developed a frame to be installed on a bike to give it a larger footprint to keep cars at bay and to also, hopefully, highlight the 4' space now required by PA's House Bill 170 when passing cyclists.
https://vimeo.com/30966285
You can see it is clearly a very early iteration. Very much just a proof of concept. It was very well received though. We are now looking at how to make this safer and more adaptable and potentially even posting something to instructables about how to make them.
We have heard rumors and must assume that others have done it as well, but can't really find much about other projects…so I thought I would turn to the trusty forums to see if anyone else had run across anything?
If you are interested in the larger project, we are tyring to log our progress on a wordpress site:
thesisdesignprocess.wordpress.com