Trucks do that. They are heavy, and sometimes the momentum them will force them. So he "steals" a bit of road around corners. He did not block the road. Every second truck do that around a corner. He did not see the bike coming from behind, that was his only mistake.
Those roads had no potholes. At least that time. Went to Lowveld to ride bikes, because of no potholes.
That was one that came out of nowhere! Reason it caught me off guard.
Times changed though, now those roads are stuffed also.