American National Standards Institute(ANSI). Industrial Truck Standards Development Foundation(ITSDF). Date of Issuance: October 7, 2009. Revision of ANSI/ITSDF B56.1-2005. 74 p. This Standard defines the safety requirements relating to the elements of design, operation, and maintenance of low lift and high lift powered industrial trucks controlled by a riding or walking operator, and intended for use on compacted, improved surfaces.