I was under the impression it was proportional to the 4th power of a vehicle’s weight: https://www.insidescience.org/news/how-much-damage-do-heavy-trucks-do-our

I was under the impression it was proportional to the 4th power of a vehicle’s weight: https://www.insidescience.org/news/how-much-damage-do-heavy-trucks-do-our-roads https://www.insidescience.org/news/how-much-damage-do-heavy-... But this might be measuring something a little different. Regardless, in my city (Seattle), an asphalt bike path near me (Alki trail) is still in perfect condition after a decade of frequent cyclist and pedestrian use, and adjacent car streets are riddled with potholes and cracks despite frequent patching.