Active Transportation & Micromobility
Research on human-powered mobility options such as bicycling, walking, and e-scooter use.
Journal Articles
Spatial equity implications and neighborhood indicators of ridehailing trip frequency and vehicle miles traveled in the Phoenix metro region
S.R. Gehrke, & M.P. Huff. (2022). Spatial equity implications and neighborhood indicators of ridehailing trip frequency and vehicle miles traveled in the Phoenix metro region. Transportation. 
Mining dockless bikeshare data for insights into cyclist behavior and preferences: Evidence from the Boston region
B. Sadeghinasr, A. Akhavan, P.G. Furth, S.R. Gehrke, Q. Wang, & T.G. Reardon. (2021). Mining dockless bikeshare data for insights into cyclist behavior and preferences: Evidence from the Boston region. Transportation Research Part D: Transport and Environment 100: 103044.
Spatial interactions of e-scooter trip generation and vulnerable road user crash frequency
S.R. Gehrke, B.J. Russo, B. Sadeghinasr, K.R. Riffle, E.J. Smaglik, & T.G. Reardon. (2021). Spatial interactions of e-scooter trip generation and vulnerable road user crash frequency. Journal of Transportation Safety & Security.
Social and trip-level predictors of pooled ride-hailing service adoption in the Greater Boston Region
S.R. Gehrke, M.P. Huff, & T.G. Reardon. (2021). Social and trip-level predictors of pooled ride-hailing service adoption in the Greater Boston Region. Case Studies on Transport Policy.
Patterns and predictors of dockless bikeshare trip generation and duration in Boston’s suburbs
S.R. Gehrke, B. Sadeghinasr, Q. Wang, & T.G. Reardon. (2021). Patterns and predictors of dockless bikeshare trip generation and duration in Boston’s suburbs. Case Studies on Transport Policy.
Operationalizing the neighborhood effects of the built environment on travel behavior.
S.R. Gehrke, & L. Wang. (2020). Operationalizing the neighborhood effects of the built environment on travel behavior. Journal of Transport Geography 82: 102561.
Shared-use mobility competition: A trip-level analysis of taxi, bikeshare, and transit mode choice in Washington, DC
T.F. Welch, S.R. Gehrke, & A. Widita. (2020). Shared-use mobility competition: A trip-level analysis of taxi, bikeshare, and transit mode choice in Washington, DC. Transportmetrica A: Transport Science 16(1): 43-55.
The substitution of ride-hailing services for more sustainable travel options in the Greater Boston Region
S.R. Gehrke, A. Felix, & T.G. Reardon. (2019). The substitution of ride-hailing services for more sustainable travel options in the Greater Boston Region. Transportation Research Record: Journal of the Transportation Research Board 2673(1): 438-446.
An activity-related land use mix construct and its connection to pedestrian travel
S.R. Gehrke, & K.J. Clifton. (2019). An activity-related land use mix construct and its connection to pedestrian travel. Environment and Planning B: Urban Analytics and City Science. 46(1): 9-26.
Joint consideration of energy expenditure, air quality, and safety by cyclists
A.Y. Bigazzi, & S.R. Gehrke. (2018). Joint consideration of energy expenditure, air quality, and safety by cyclists. Transportation Research Part F 58: 652-664.