Dr. Bush mentioned in City Pulse article about the challenges users of assistive device have with sidewalks that are damaged, uneven or have large cracks or holes in them. The bush lab has been conducting research on side walks and how it affects pick up and drop off zones for users of assistive devices.
Here is the link to the article Dr. Bush is quoted in - Fix the damn sidewalks: Lansing’s are as bad as the roads | City Pulse