This document gives requirements for the types of industrial trucks specified in the scope of EN ISO 3691-1. This document is intended to be used in conjunction with EN ISO 3691-1. These requirements are supplementary to those stated in EN ISO 3691-1 with the addition of hazards, which can occur when operating in potentially explosive atmospheres. This document covers the following requirements: electrical requirements; noise emissions; vibration; visibility; electromagnetic compatibility (EMC). This Edocument defines supplementary requirements to EN ISO 3691-1: travel speed; brakes; travel and breaking controls - Additional operation from alongside pedestrian-controlled and stand-on trucks; lift chains; mast tilt and carriage isolation; operator's seat; operator restraint device; protection against crushing, shearing and trapping; information for use (instruction handbook and marking). Annex A (informative) contains the list of significant hazards covered by this document.