I've had people have to brake hard behind me at stop signs, both when I was riding a bike and when I was driving a car, when I came to a complete stop at a stop sign. Around here, it's extremely rare for cars to actually stop at stop signs unless there is actually cross traffic present. If they even slow down to < 5 MPH it's about the best you can hope for.
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Work: the 8 hours that separates bike rides.