Who invented wheelchair accessible sidewalk ramps?

The concept of wheelchair accessible sidewalk ramps evolved over time, with contributions from various advocates and designers focused on accessibility. One notable figure is Ed Roberts, a disability rights activist who, in the 1960s, played a crucial role in advocating for accessible environments, including ramps. While it is difficult to attribute the invention of sidewalk ramps to a single individual, the push for their implementation was largely influenced by the broader disability rights movement.