(a) The county superintendent shall insure the office of the county superintendent against loss or damage with respect to commercial type motor vehicles, such as trucks, buses, trailers, and special type mobile units, due to fire, theft, collision, upset, or other casualties ordinarily included in provisions for comprehensive coverage. Collision insurance may be of the type commonly referred to as “deductible.”

(b) The county superintendent may insure his office against such losses with respect to passenger type motor vehicles.

(c) Insurance shall be procured from an admitted insurer and shall be in an amount deemed by the county superintendent of schools to be appropriate.