Ive always wondered what pavement types off the most or least traction? This is basically asphalt and concrete. But you can break that down to new v. old asphalt and new v. old concrete.

I personally think new, very fresh asphalt seems to have less traction that older asphalt and that concrete has the best traction. How does everyone here see it?

i read somewhere that concrete does have more traction than asphalt

I look at pavement as either wet or dry, clean or stewn with debris (leaves, pine needles, mud), and then there's gravel depth and width.

When I raced I paid attention to the difference between asphalt and concrete, back then, asphalt did have better traction than concrete, except when it's wet.

Here's something I found on the internet......May be of interest but doesn't seem to be correct.......I think modern tires on asphalt can do way better that .70

But it certainly show what a differnece the road surface can make!


Coefficient of Traction for Rubber Tires on Various Surfaces
Source: Forestry Handbook by Karl F. Wenger (1984)
Concrete (dry)  .70
Asphalt (dry)   .50
Asphalt (wet) .45
Gravel (packed, oiled, dry) .50
Gravel (packed, oiled, wet) .40
Dirt (packed, dry) .50
Mud.15 ~ .40
Snow (dry, on loose gravel) .25
Ice (free of snow)  .07

Thank you Mr. Wenger, I now know not to drive on ice...

Wet concrete: .45-.75
Dry concrete: .6-.85

Figures the track I raced at is mostly asphalt, and that that would be the surface to get used to, as the start/finish was the concrete launch pad for the dragstrip there.