[Christ]

Stay to the right, and use a "slow moving vehicle" insignia. They're generally good for any vehicle which cannot exceed 40 MPH. (The triangle thing.)

Also - speak with some Amish people about their road-going ways and how the laws affect their transportation. You may gain some insight from that avenue as well.

Lastly, speak with your local State Police and DOT offices, to find out more detailed information. The law is only your enemy if you intend to offend it, otherwise, use the information provided by those in authority as often as possible, and take it in higher regard than the hearsay of those irritated by your slow moving ways.