CAN/CSA-ISO 4254-1:20

Preface:
This is the third edition of CSA ISO 4254-1, Agricultural machinery — Safety — Part 1: General requirements, which is an adoption without modification of the identically titled ISO (International Organization for Standardization) Standard 4254-1 (fifth edition, 2013-05-01). It supersedes the previous edition, published in 2007 as CAN/CSA-M4254-1 (adopted ISO 4254-1:2005).
This Standard is intended to be used in conjunction with CSA M500-1:20, Agricultural tractors — Rear-mounted power take-off types 1, 2, 3 and 4 — Part 1: General specifications, safety requirements, dimensions for master shield and clearance zone (adopted ISO 500-1:2014, with Canadian deviations).
This Standard was adopted by CSA Group with funding support provided by the Canadian Agricultural Safety Association (CASA). CSA Group and the funding body disclaims any liability in connection with the use of the information contained therein.
This Standard has been developed in compliance with Standards Council of Canada requirements for National Standards of Canada. It has been published as a National Standard of Canada by CSA Group.
Scope:
This part of ISO 4254 specifies the safety requirements and the means of their verification for the design and construction of self-propelled ride-on machines, mounted, semi-mounted and trailed machines used in agriculture in order to deal with the hazards which are typical for most of the machines. In addition, it specifies the type of information on safe working practices including information about residual risks to be provided by the manufacturer.
This document deals with significant hazards, hazardous situations and events, as listed in Annex A, relevant to this agricultural machinery when used as intended and under the conditions of misuse foreseeable by the manufacturer during normal operation and service.
This part of ISO 4254 is not applicable to
agricultural or forestry tractors,
aircraft and air-cushion vehicles used in agriculture,
lawn and garden equipment,
machine-specific components or functions (e.g. working tools and/or processes).
This part of ISO 4254 is not applicable to hazards related to periodic service, machine conversion and repairs intended to be carried out by professional service personnel, environmental hazards, road safety (e.g. steering, braking), or to the power take-off (PTO) drive shaft; neither is it applicable to guards of moving parts for power transmission except for strength requirements for guards and barriers.
This part of ISO 4254 is not applicable to machines which are manufactured before the date of its publication.
Not all of the hazards dealt with by this part of ISO 4254 are necessarily present on a particular machine. A risk assessment should be carried out by the manufacturer to determine the hazards that are applicable and any hazards in addition to those dealt with by this part or a relevant machine-specific part. The requirements of a machine-specific part of ISO 4254 take precedence over the requirements of this part.