It also points out that the Met Police stopped using appeal boards for crimes other than murders or road traffic accidents in 2009.
They included a tunnel, a bridge or for road traffic to use a nearby railway when trains were not using it.
As with other schemes once the road or bypass is built the traffic builds up again.
He said police would "continue to target, with a view to prosecution, all those that ride or drive dangerously, at excess speed, overtake on solid white lines or commit any other road traffic offences".
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Predicting traffic volume for a given bridge or road means also predicting population and economic growth, and that is never easy.
The Home Office is carrying out a review to see how it can strengthen the law on road traffic offences, particularly where offenders cause death or injury.
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While it's clear that meteorologists who chase know how not to interfere or know how to keep major road stems free of traffic, it's not clear that others do.
It has sensors and systems that observe the road, process traffic situations, and respond to various unexpected developments, such as an obstacle in the road, or a sudden snowstorm that causes everything to slow down.
But many commuters and motorists said they did not really see the point of the scheme and some drivers reckoned the idea of having one route in and out restricts traffic flow and does not allow for accidents or other road closures.
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Cars that can do smaller functions, such as control a car in traffic jams, keep you inside lane markings or auto-park, are already on the road or about to come to market courtesy of Toyota, Mercedes, BMW and others.
Current municipal traffic monitoring systems study individual stretches of road that use induction loops to sense the passage of cars, or complex camera systems that capture licence plates.
As a continental trade port, admittedly, its future is dim: Chilean shippers say that they handle little traffic between Asia and Argentina or Brazil, and there has been only slow progress on building the road and rail links across the continent that could extend the hinterland of Chilean ports.
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