I see these tire marks on most every bump on roads all over the country, especially at start and end of bridge. Are they made by a specific type of truck/trailer? Ones with raised axles? That’s my guess…
I hope to be a trainer someday and this is one thing I plan to show my trainees as it alerts you to a bump coming… trainers, do you show these to your newbs?
It seems like whatever causes them must be really common since even if they wash off, I see them ALL THE TIME.
Does it cause a problem with flat spots on the tires that make these?