Paul - The speed limit on this particular road is 35 mph. At 25 mph, in several spots, you would likely have a hard time avoiding a collision. At that speed or slower you would risk causing an accident with other vehicles.
There are roads that are simply not safe for bicyclists.
If that were the case I'd slow my driving down so that I didn't outdrive my line of sight. My experience tells me there can be any number of hazards around a blind bend. Driveway entrances where someone may be pulling out. Mailboxes where a mail carrier is stopped. Stalled vehicles. Tractors. Fallen trees. Livestock. Wild animals. The list goes on. I have a choice as a motorist. Drive at a speed that allows me to react, or drive with negligence. I choose the former.
