scope:

This European Standard specifies dynamic tests for theverification of lateral stability for counterbalanced lift trucksaccording to EN ISO 3691-1 that have a centre control, sit down,non-elevating operator, with a rated capacity up to and including5000 kg when travelling on smooth level ground with the forks intravelling position. The standard is not applicable for RoughTerrain forklift trucks. NOTE 1 Experience shows thatcounterbalanced lift trucks with a rated capacity over 5000 kg arenot significantly affected by lateral instability. The requirementsare specific to the various drive systems (e. g.Electric-/Internal-Combustion-Engine trucks), taking account oftheir varying influence on dynamic stability performance. ThisEuropean Standard does not cover the risk of a lateral tip overassociated with driving backwards. NOTE 2 Research has shown thatdriving backwards in typical working operations, such as unloadingof a lorry, does not cause lateral instability. For this reason,only driving forward needs to be tested. Risks due to falling off aloading dock or turning on a ramp are not covered by this EuropeanStandard. Risks due to lifting or manoeuvring operations arecovered by the respective stability tests.