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the realities

environment and energy
the trade off
DME campaign
growth and congestion
the calf path
road reserves - where are they
silent cops or silent executioneers

what to do

continuous flow methods
intersection design
lev el of service
context sensitive design
ways to reduce congestion toolbox
2007 comments re NMBM dedicated bus routes
2011 quo vadis BRT
letters and press articles

suggestions

Suggested Plan for Buffelsfontein/17th Ave zz
Sugges ted Plan for Walmer Heugh and Main Roads
S uggested Plan for Walmer Blvd / M4
Sugges ted Plan for William Moffat Expressway
Suggested Plan for Fairview By Pass
Sugge sted Plan for Walmer Park / Main Road
Suggested Plan for Uitenhage Road / N2
Suggested Plan for Stanford Rd / N2
Suggested Plan for Disa Ave / N2
Suggested Plan for Circular Drive and Kragga Kama
Suggested Plan for Samantha Rd / N2

bibliography

By Pierre Joubert
Bibliography


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Environment and Energy

classroom version

The trade-off

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Global warming and fossil fuels



(click on pics to enlarge) We live in a unique spot in the history of the Earth. For 4500 million years Earth has existed. Changes and evolution were counted in millions of years until the past 100 years, when gargantuan events occurred.

During these past 100 years the growth in technology, production and population was greater that at any other time in history. But during these 100 years man has also depleted much of the earth's fossil fuel reserves, which were formed 300 million years ago. Once gone, these fuels, that we buy for a few Rand at the pumps and take for granted, will be gone forever. (click on pic to enlarge)

Scientists and other clever people, like the ones who gave us cars in the first place, are struggling to find alternatives to fossil fuels, or hydro-carbon dependence as it is sometimes referred to. If they dont, our energy holiday will be over, and the cars we drive will become as obsolete as the ships that carried Vasco do Gama and Columbus on their great voyages of discovery.

And burning these fossil fuels over the past 100 years has made a lot of smoke, and upset the delicate balance of gasses in the atmosphere. The earth's friendly atmosphere (click on pic to enlarge) is vital to the existence of man and feeds us and protects us in many ways, provided we look after it. This attack on the atmosphere has lead to Global Warming and the outcry against it. While we still walk and breath, it's easy to say "so what" to this matter many of us probably dont really undertand, because its smoke you cant see, but David killed Goliath, and that is what we are doing to the atmosphere, they say. Like a solution to fossil fuel dependance, a solution to global warming is a long way off.

While fossil fuel dependence is in the hands of highly technical people, Global Warming is in the hands of everyone. Never before has any issue transcended international boundaries like this one. So Global Warming has landed with United Nations. The UN April 2007 report is said to have been contributed to by over 2000 scientists. The report is an appeal to everyone to take responsibility for their own "carbon footprint", nations, local authorities and individuals. It aint gonna be easy, when more of us want to drive, and across the border others are cutting down rain forests to sell the wood.

Scientists have long pondered and debated global atmospheric temparature balance. Initially their interest was merely academic, to try and explain the great ice-ages. Today it is very immediate, with international attention on global warming fast approaching a crisis. We are facing a reverse process from the ice-ages, with potential unstable climates, droughts, food shortages and rising sea levels.

What's this got to do with Traffic Planning

Quite a lot, because inefficient traffic flow burns unnecessary fuel. We as a community needs to do our share to reduce our own carbon foot print, and any traffic planning issue needs to include "carbon impact", because we can make a difference in this crucial area, by making our traffic flow more efficiently

Links for further reading



The dme campaign

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