Abstract
Experimental travel by wheelchair users were made to compare accessibility of normal ramps and two pieces of step-by-step ramps, and travelability on a long 1:20 gradient standard ramp. The results are as follows; 1) The travel estimation is affected by the difference of state of arms of wheelchair users. 2) Step-by-step ramps are more accessible and safer than normal ramps for wheelchair users. 3) Intermediate landings help decelerate downward travel speed. 4) It is difficult to travel up a long 1:20 gradient ramps, and dangerous to travel them down due to acceleration.
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