https://www.sciencedaily.com/releases/2019/10/191007141650.htm

The study, in the journal Transportation Research Part F: Traffic Psychology and Behaviour, assessed the Level of Traffic Stress system, which traffic officials use to determine the safety of bicycle routes. The system helps to classify streets from low to high stress.

The study found that 88 percent of parents would allow their children to bike on multi-use pathways, but many are unwilling to let them ride on other streets classified as low stress. Just 44 percent of parents would allow their children to bike on wide residential streets and only 32 percent would do so on narrow residential streets. More parents were willing to allow their children to ride on buffered lanes along busy streets than on narrow residential streets.