Brief Description (Alt Text):
A set of four figures showing four different dimensions of accessible routing problem.Essential Description (Caption):
The four figures show four dimensions of routing related difficulties for wheelchair users, such as slope of the path, surface of the path, nature of turns and distance of the route.
Detailed Description (Description):
The first figure shows a wheelchair user pondering at the bottom of a steep slope considering it to be too high to surmount. Since, different users have different capabilities, personalized routing is necessary for each. Second figure shows two different surfaces -one gravel and one cobblestoneand a wheelchair user is trying to decide which surface is to choose on his way to the destination. The third figure shows a narrow corridor through which a wheelchair user is trying to navigate with two sharp 90-degree turns and is considering them too sharp. The fourth figures shows two different routes generated by Google map between a pair of source and destination locations. Naturally, the wheelchair user is trying to decide which route is the shortest.