Do bicycles slow down cars on low speed, low traffic roads? Latest research says 'no'

New research demonstrates that bicycles do not significantly reduce passenger car travel speeds on low speed, low volume urban roads without bicycle lanes. The research shows that differences in vehicle speeds with and without cyclists were generally on the order of 1 mph or less - negligible from a practical perspective.

source https://www.sciencedaily.com/releases/2020/07/200723171957.htm