I recall my folks always being extra nervous and cautious on the road during hay season. Those semi trailers overloaded with hay bales were really a hazard! Logging trucks are another one, quite similar but with a longer "season" (year round). This is cheap stuff relative to volume, so they pile on as much as they can per load and drive it as fast as they can. The wind drag is worse than most "ordinary" trucks create. Some cousins of my mom's were killed on their honeymoon when the little sports car they were driving got sucked in under a hay truck. Just imagine what would happen to a bike!

So of course, in hay season, I'm still extra careful. That said, shouldn't it be the other way around? It's the truckers who are driving a "murder weapon". Shouldn't the ordinance specify that they're the ones who need to reduce speed and show extra caution, show awareness of the physics of their load?