> Doug wrote:

>> On 17 Sep, 15:30, "Brimstone" yahoo.co.uk> wrote:

>>> Doug wrote:

>>>> So what will happen when this supply led demand increases and
>>>> congestion again becomes as bad as ever? How will the emergency
>>>> services cope with no vacant hard shoulder? Let me guess, more
>>>> motorway widening/building?

>

>>> If the demand is supply led how come they having to widen the
>>> motorway? If it was supply led the capacity would already be there.

>

>>> Add "supply and demand" to the list of things that Doug knows SFA
>>> about.

>

>> Think of congestion as subject to feedback. Attempts to decrease it
>> will encourage more/longer vehicle journeys which will in turn return
>> congestion to its previous level. OTH, if congestion increases, due to
>> a number of possible factors, this will deter vehicle journeys which
>> will also return congestion to its previous level. Despite perpetual
>> roadbuilding for many years, in an attempt to decrease congestion,
>> this has largely failed and congestion is as bad as ever due to the
>> above mentioned feedback loop.

>

>> The only way to reduce congestion is to reduce the number of vehicles,
>> mainly cars, on our roads.

>
> Please show eveidence of this alleged "perpetual roadbuilding for many
> years".-