Extrapolations in Traffic vs. Reality

There seems to be a global patterns among the Anglo-Saxon nations (and perhaps others). If you have more forecasting graphs like this for other places, please send them along via the Comments, and I will update this post.

New Zealand:

Figure 2: Historic New Zealand light vehicle traffic forecasts vs actual growth Source: http://www.transport.govt.nz/ourwork/keystrategiesandplans/strategic-policy-programme/future-demand/
Figure 2: Historic New Zealand light vehicle traffic forecasts vs actual growth Source: http://www.transport.govt.nz/ourwork/keystrategiesandplans/strategic-policy-programme/future-demand/

United States:

U.S. DOT highway travel demand estimates continue to overshoot reality (SST By Eric SundquistI) http://www.ssti.us/2014/03/u-s-dot-highway-travel-demand-estimates-continue-to-overshoot-reality/
U.S. DOT highway travel demand estimates continue to overshoot reality (SST By Eric SundquistI) http://www.ssti.us/2014/03/u-s-dot-highway-travel-demand-estimates-continue-to-overshoot-reality/

United Kingdom:

UK National Transport Model consistently overestimates future car use Source: http://road.cc/content/news/137057-cycling-revolution-rolling-backwards’-according-figures-–-car-use-rise-still
UK National Transport Model consistently overestimates future car use
Source: http://road.cc/content/news/137057-cycling-revolution-rolling-backwards’-according-figures-–-car-use-rise-still

Some additional forecasts and/or trends from the comments and elsewhere

Australia:

Are Australians driving more (or a lot less?) via Alan Davies
Are Australians driving more (or a lot less?) via Alan Davies

Portugal:

Source: http://www.estradasdeportugal.pt/index.php/pt/informacoes/estudos/871-concessoes-rodoviarias-um-novo-paradigma-operacional (Portuguese) via Marcos Paulo Schlickmann
Source: http://www.estradasdeportugal.pt/index.php/pt/informacoes/estudos/871-concessoes-rodoviarias-um-novo-paradigma-operacional (Portuguese) via Marcos Paulo Schlickmann

Washington State:

Washington State forecasts for SR-520. Source: Sightline Institute via https://wordpress.com/post/52773390/8048
Washington State forecasts for SR-520. Source: Sightline Institute

British Columbia:

Port Mann Bridge, British Columbia http://pricetags.wordpress.com/2013/10/03/sightline-british-columbias-traffic-delusion/
Port Mann Bridge, British Columbia  Source: Sightline Institute

New Zealand:

Traffic volumes across Waitemata Harbour
Traffic volumes across Waitemata Harbour. Source:

Maryland:

Intercounty Connector Source: Image by Claire Jaffe http://greatergreaterwashington.org/post/24959/the-intercounty-connectors-traffic-is-light-so-far-but-the-roads-future-is-still-unclear/
Intercounty Connector Source: Image by Claire Jaffe

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Aurelija Augulyte (@auaurelija) 6/12/15, 03:44 but hey don't worry about Sweden. #Riksbank has it all under control. pic.twitter.com/NWdZfvUpaG
Aurelija Augulyte (@auaurelija)
6/12/15, 03:44 writes:
but hey don’t worry about Sweden. #Riksbank has it all under control. pic.twitter.com/NWdZfvUpaG
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