Specifications include, but are not limited to: The following specification requirements apply to the purchase of newest model year conventional tandem axle semi-tractor by the Iowa Department of Transportation, Iowa DOT. Tractor is used in warehouse operations to deliver freight and equipment to field locations statewide. This unit will later be equipped with live hydraulics and reassigned to field maintenance, typically pulling an anti-ice semi-trailer in the winter, and used for other maintenance activities in the summer, such as use with a live floor aggregate trailer Proposed tractor must be a current model under standard production. Parts and accessories must be stocked and readily available from the successful bidder. All standard equipment, as listed or shown in the published model literature, must be provided. Dealer or bidder modifications to a non-conforming model for the express purpose of meeting minimum performance requirements will not be acceptable.