If changing positions in the roadway will affect other drivers' use of the road, bicyclists must yield to other traffic and must signal their intent before moving. It is up to the passing driver to ensure that passing can be done safely. If it can't, the pass will have to wait. Where room exists for safe passing, bicyclists traveling slower than other traffic must move right to make passing easier, but not if this means going through potholes, riding too close to parked cars, or leaving the roadway. Passing on the right is permitted, not required, and passing on the left is usually safer.
Danger is created by impatient motorists who pass unsafely.
Delay in passing is not the same as danger. Most delays are caused by motor vehicle congestion and traffic controls. Many kinds of motor vehicles travel slower than bicycles, and all motor vehicles are larger than bicycles, making them harder to pass. If a town wishes to minimize delays associated with motorists passing bicyclists, the town can widen the road to make safe passing easier. From the officer's description of the incident, Jenney might be guilty of entering intersections on a red signal.