Why do sidewalks have raised, colorful domes on sidewalk ramps? Why do airports have raised strips on walkways? Most people move throughout public spaces without understanding the purpose of these tactile surfaces underneath their feet. Yet, for specific people in our society, these tactile surfaces are the difference between independence and dependence.

The purpose of detectable warning tile systems is to protect pedestrians of all abilities from hazards such as vehicular traffic and mass transit. According to the standards released by the Americans with Disabilities Act (ADA) and the Architectural Barriers Act (ABA), most public spaces are expected and required to equip detectable warning dome tiles.

While walking on the sidewalks, you may have noticed small, colorful bumps where the sidewalk meets the road. What are these bumps? Why are they placed so strategically at the edge of the sidewalk, at crosswalks, and near public transportation? What purpose do they serve? Are they there to increase the grip on the road? Or, do they serve some other purpose? Let’s find out!

A wheelchair can mean the ticket to independence for some individuals, but the regular built environment is rarely arranged in a way that is easily navigable by individuals using wheelchairs. Beyond the built environment, social interactions can cause an extra strain on those who rely on wheelchairs as their primary mode of mobility. These social and infrastructural barriers impede the lives of wheelchair users every day.

Curb ramps are the solid ramp that joins the top of a sidewalk to the adjoining street level. Also known as a curb cut or dropped curb, curb ramps are primarily used by pedestrians throughout urban areas where the main mode of transportation is walking. Curb ramps facilitate easy movement from the sidewalk to the road for individuals who use mobility aids.