Both you and the truck driver should have been able to see this event on the side of the road before hand
Unless you just topped over a hill
Three other cars in the left lane
What about behind you, could you not put on the brakes an at least be slowing down ?
Maybe you did all this, IDK
If you did everything possible there is nothing you can do but pay
Maybe a dash cam , would have provided video evidence of the situation Not being visible, which could be submitted in court
I do know right or wrong , most of the time it's best to accept the ticket and fight it in court If you can win it