This International Standard specifies the safety requirements for the manufacture, application, operation and maintenance of powered industrial trucks.
The term "powered industrial trucks" applies to mobile, power-driven vehicles used to carry, push, pull, lift, stack or tier any type of load, as described in clause 3.
The word "shall" is to be understood as expressing a mandatory requirement and the word "should" as expressing a recommended requirement.
Amendment 1 to International Standard ISO 3691-1980 was developed by Technical Committee ISO/TC 110, Industrial trucks.
It was submitted directly to the ISO Council, in accordance with clause 6.11.2 of part 1 of the Directives for the technical work of ISO.