A visual preference survey of 836 Boston pedestrians and cyclists indicates a preference for trees and shrubs as dividers between bike lanes and traffic and the presence of trees alongside bike lanes over no trees at all. Respondents also felt that the presence of trees and bushes between the track and the street helped them to feel cooler and mitigated feelings of being exposed to pollution.
Lusk, Anne C., Demostenes Ferreira da Silva Filho, and Lea Dobbert. (2018). Pedestrian and cyclist preferences for tree locations by sidewalks and cycle tracks and associated benefits: Worldwide implications from a study in Boston, MA. Cities. https://doi.org/10.1016/j.cities.2018.06.024
