4804276a_Winter_Cycling_in_Ice_and_Snow__Description
[Classification] Dry Asphalt [Friction Available] 0.68 to 0.85 Average value of 0.72 [Description] 
This value is commonly used as the reference value for rubber tires on dry asphalt. Concrete is typically lower.
Ice Biking - How to do Winter Cycling in Ice and Snow
Description