In 1953, The Pima County Sheriff's Department Motor Unit had been in operation for about one year and ten months. During this time Motor Deputy Jack Brierly was killed on his motorcycle in a collision on his way to a call. Sheriff Eyman reported that 17 motorcycle crashes and one death were too much. Sheriff Eyman eliminated the unit.
Currently there are 8 members of the Motor Unit, 7 + a SGT. The department is using the Honda ST 1300P which is equipped with a computer and ticket writing software and AR-15's.
Each member of the Motor Unit are DRE’s (Drug Recognition Experts) & Phlebotomist and instructors at the police academy as well as thru out Arizona in vary fields; DRE, HGN, SFST, Collision Reconstruction, Driving, Pursuit driving, Fraudulent identifications, firearms, First aid, Phlebotomy for law enforcement, Prosecutor training, Traffic law, Judge training on law enforcement issues. The primary goal of the Motor Unit is to enforce traffic laws rigorously and support patrol as needed and address all fatal collisions in unincorporated Pima County.