Pics kind of tell the whole story here! Some chump cut down a lampost and left it there in the dark, i drove over it after giving some kids running around a minibus in a truckstop a wide berth, tyre popped, unit slumped, diesel tank ruptured, all hell broke loose!
I’d pass all the details to your Company Insurers, they will have a field day with this!!. No barrier round it, no warning lights, the list goes on, definitely not your fault
Having just re read this i feel the need to explain that the natural traffic flow is along the path of the curb pictured, kinda makes sense why i was driving down the curb!!!
Looks nasty mate! Similar thing happened to me a few years ago, but it was a piece of steel that fell off a scrap tipper I was following, that ruptured my tank. Got reg no. but couldnt prove anything, made it a bit slippy round Knutsford though!