Respondents to this blog and others generally seem to support the idea that dualling the A30 would be a good thing. Superficially it appears to be the sensible, common sense approach. Yet recourse to research on the subject or a little bit of thinking would suggest otherwise.

Congestion on the highway network would decrease if a new road/extra carriageway was provided,

    but only if


The population did not increase;

There were no additional traffic generating developments;

Households made no more car trips than they did prior to the additional road space being provided.

That is essentially it. Without those changes congestion will still be there!


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