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?

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.

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.

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Mark Smith
Master Certifited Technician
Tempus non reparabilis fugit
"It isn't pollution that's harming the environment. It's the impurities in our air and water that are doing it."

Best Tank 35.0 MPG

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.