Bulletin #2318, Maine Farm Safety Program: Tractor Safety (PDF) By Dawna L. Cyr, Farm Safety Project Assistant, and Steven B. Johnson, Ph.D., Extension Crops Specialist For information about UMaine Extension programs and resources, visit extension.umaine.edu.Find more of our publications and books at extension.umaine.edu/publications/. Table of Contents: Before Using a Tractor Starting the Tractor No Riders