Xiaodong Qian

TL;DR: In this paper, the authors developed a negative binomial regression model to estimate bikeshare ridership using data from Chicago's bikhare system and found that the proportion of trips by annual members is significantly lower in disadvantaged communities than in other areas.

TL;DR: In this article , the authors provide a review of the literature for modal shifts in the US and other countries, and show that people use shared e-scooters in place of cars at substantial rates, especially in many US cities.

TL;DR: It is found that dockless systems can provide greater availability of bikes for CoCs than for other communities, attracting more trip demand in these communities because of a larger service area and frequent bike rebalancing practices.

TL;DR: In this article, the authors use a newly developed spatial index that combines the potential for increased access to jobs and essential services, the level of bike infrastructure, and the disadvantaged population shares, and find evidence that existing bikeshare systems have been specifically designed to target certain ridership.

TL;DR: In this article, the authors examine the factors associated with the initial wildfire awareness time, the evacuation preparation time, and finally the departure time and find that quicker awareness is associated with seeing the fire first-hand, familiarity with local evacuation protocol, smartphone ownership, among others.