INTRODUCTION Public bicycle sharing services have become a common part of inner-city transportation in Taiwan for many years now. It seems like a new U-Bike docking cluster appears in a new place every week, allowing an ever-growing number of people access to low-cost transportation. Yet while it is clear that such vehicles offer us convenience and general health benefits, what does the research say to justify the expansion of public bicycle sharing programs? You-bike is a common public bicycle sharing platform, accounting for more than 85% of all public bike usage in Taiwan by December of 2022. It is located in 11 cities all over the island, and the number of bicycles available for use has tripled in the past five years. Most single commutes are between two and three kilometers. Riders are primarily very young, with 46% of total ridership between the ages of 16 and 25. Elderly riders between the ages of 61 to 68 also make up a significant part of total riders with 29%. [1] THE ...