Shota MORISHIGE
Analysis on Bicycle Parking Behavior and Evaluation on Illegal Parking Bicycle Removal Plolicy -Case Study of Osaka City-
Kazushi SANOĦ¤Hiroaki NISHIUCHI
In Osaka, many illegal bicycles parking on streets cause problems such as inhabitation to pedestrians and landscape destruction. Though Osaka city government removes bicycles that have parked on roads in parking prohibit area for more than one hour in order to reduce the number of illegal bicycle parking, the number of them is still high. This research aims to evaluate the removal policy for illegal bicycle parking by conducting questionnaire survey to riders who park their bicycles at prohibit area around four rail stations (Kujo station, Taisho station, Yotubashi station and Nishiohashi station) in Osaka, and by developing a parking location choice model, a removed bicycle receipt model and willingness to pay model for reduction of the number of illegal parking. We estimate both the number of reduced bicycle parking on road and that of increased ones in parking lots, and also estimate the marginal cost by using the above models when the frequency of enforcement to remove them.
We also estimate the marginal utility of pedestrians caused by the reduction of illegal bicycle parking on roads by answer results of the survey to pedestrians. By comparing the marginal cost and utility, we propose the optimum frequency to remove illegal bicycle parking on roads according to the circumstance of each station. As a result, optimum frequency to remove illegal parking bicycles on roads is 2 or 3 times in a week in Taisho station, Yotubashi station and Nishiohashi station. Also optimum frequency to remove illegal parking bicycles around Kujo station has not changed.
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