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Saggy Roads Waste Fuel, Cost Money

Civil engineers from MIT have completed a study in which they have determined that vehicle fuel consumption could be reduced by as much as 3 percent by having stiffer roads. Looking at the way forces interact between the tire and buy cialis the road, the researchers conclude that, "This has the effect of making the tires on the vehicle drive continuously up a slight slope."

Inefficiencies due to saggy roads are responsible for the www.fashionunited.info use of cheapest tramadol an extra 273 million barrels of crude oil per year (costing $15.6 billion at today’s oil prices) and producing CO2 emissions of 46.5 million metric tons. In addition to the fuel savings, building better roads would reduce maintenance costs, providing long-term savings and improved national infrastructure.

“We’re wasting fuel unnecessarily because pavement design has been based solely on minimizing initial costs more than performance — how well the pavement holds up — when it should also take into account the environmental footprint of pavements based on variations in external conditions,” according to Mehdi Akbarian, one of the study's authors.

With over 8.5 million lane miles making up the US roadway network, it would take a long time to revamp the entire system. But the cialis pills online results of the study could be applied to make improvements to the way roads are repaired and maintained, leading to http://robovero.com/viagra-sales-online a better road system over time.

Public Domain image by Shadowlink1014/Wikimedia

via: MIT News

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Comments (6)Add Comment
0
Intelligent tyres
written by Charles, May 29, 2012
It is pretty obvious that it is going to be very expensive to redo the roads. The article quotes 273 additional barrels of oil as a result. I doubt this very much, in fact I think that figure was plucked from someone's nether regions.

Why can't intelligent tyres be designed which automatically compensate for this effect? It would be a heck of a lot cheaper and more environmentally friendly.
0
Follow the Energy
written by Fencerdave, May 29, 2012
I dislike the explanation that "This has the effect of making the tires on the vehicle drive continuously up a slight slope."

The energy required to drive up a slope is due to the conversion into gravitational potential energy. The road is not pushing the cars up any further from the earth after a drive and they are not gaining any Gravitational potential from the road-tire interaction, it stands to logic that this is an entirely invalid argument.


It would be both more correct and much easier to say that the 'softness' of the road impacts the revistaneon.net energy output of viagra 100 mg cheap the car either through friction with the tires or by increasing the internal friction of the engine.

Either way, the frictional loss of energy is the real reason why energy (and thus efficiency) is being lost, as it is given off as heat.
0
Trees
written by Richard, May 30, 2012
I drive an 18 wheeler all 48 states. Yes, concrete roads are harder and my trucks rolls easier. They are also more noisy.

In the midwest and brand name cialis for sale west, high winds often eat my lunch and dinner. My fuel milage can drop from 6.5mpg to viagra online in uk less than 4mpg during high cross winds or head winds. Planting trees along side the interstates would reduce these winds and save a lot more fuel than better tires or harder pavement.

These wind breaks would also cut down on follow link on line pharmacy drifting snow during winter months, making the roads much safer!

Trees store carbon, and clean the air as well.

0
Trees suggestion
written by Voltair, May 30, 2012
Richard,
Great suggestion! Question: Have you tried and seen an effect from using any of the new aero-aids like the skirts beneath the 100 mg tramadol online trailer and in front of the trailer wheels? How about the magnetic inserts that look like fabric hubcaps?
0
Solar Roads would help
written by Alan Greenspan, June 08, 2012
Solar roads cost the same as asphalt and have exponential benefits, including providing power, super strength, etc.
0
negative side of this?
written by Robert, June 08, 2012
Wouldn't revamping all these roads have a massive Co2 cost as well? Not to mention that roads take maintenance, so a new paving style done every couple of decades, could possibly counteract the benefits of buy cialis online canadian phamacy 'stiffer roads'

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