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-   -   Pavement can reduce MPG by 10% (https://www.greenhybrid.com/forums/f22/pavement-can-reduce-mpg-10-a-15534/)

Highbred 10-03-2007 08:50 PM

Pavement can reduce MPG by 10%
 
I recently drove on a newly repaved highway and immediately noticed a reduction in rolling resistance compared to the rough pavement that is typical in this area:

http://highpoly3d.com/textures/pavement/pavement_4.jpg

So I googled "rolling resistance" and came up with this Danish survey which claims that pavement alone can eat up 10% of your fuel economy.

http://www.vejdirektoratet.dk/publik.../chapter07.htm

Are those of you who drive on textured pavement getting fuel economy in reasonable ranges?

KenG 10-04-2007 05:51 AM

Re: Pavement can reduce MPG by 10%
 
Anyone who does a lot of road bicycle riding knows this effect very well. Some surfaces that look OK actually are rough or soft enough to significantly increase the pedaling effort.

Mark E Smith 10-05-2007 12:45 PM

Re: Pavement can reduce MPG by 10%
 
I was beginning to come to this conclusion. I have a stretch that has rough pavement and lose about 3 mpg when traveling on it.

spartybrutus 10-05-2007 02:53 PM

Re: Pavement can reduce MPG by 10%
 
Actually, FRESH blacktop seemed to be rougher than the old pavement they had down. Seems like I lost a few mpg for a few weeks until everyone beat on the fresh (soft/bumpy) blacktop. Now it seems to have lower rolling resistance.


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