It's a common road sign that really annoys me, but am I right in thinking that this is not good English?
I always understood 'liable' to be used in a similar way to 'likely' - so 'likely to flood, not likely to flooding... Or, if they must use flooding, then change it to 'prone to flooding' rather than liable?
Am I right to be be annoyed by it or should I let it go as a symptom of my own ignorance??