It has been considered that the minimum requirement of effective sidewalk width is 1. 5m. But it is not ideal under some conditions.
This paper aims at a method to decide the sidewalk width considering three traffic conditions which often happen (pedestrian walks 1.with umbrella, 2. with fellows, 3. with baggages).
The survey results are as follows: a. the width of one pedestrian with umbrella is 1.0m. b. in urban area, the rate of pedestrian who walk with fellows is about 20-50%. c. the with of one pedestrian carrying baggages is about 0.85m. d. on the sidewalk of 1.5-1.9m width, pedestrians are often forced to go into carrigeway to avoid conflicts with other pedestrians.
After consideration of these behavior of pedestrians, we propose that 2.25m should be the desirable service level as the minimum width for sidewalks.