ISO 3767-3:2016

Overview

ISO 3767-3:2016 specifies standardized graphical symbols for operator controls and other displays used on powered lawn and garden equipment. Part 3 of the ISO 3767 series focuses specifically on symbol graphics for items such as lawn and garden tractors, riding mowers, grass-cutting equipment, tillers and snow‑removal machines. The third edition (2016) updates and expands earlier editions, helping manufacturers and designers present control functions consistently and internationally.

Key topics and technical requirements

• Scope: Standardizes symbols for operator controls and displays on powered lawn and garden equipment (ISO 3767-3:2016).
• Referenced standards: Relies on ISO 3767-1 (common symbols) and IEC/ISO guidance for graphical symbols (IEC 80416 / ISO 80416 series). It also points users to ISO 7000 and IEC 60417 for additional registered symbols.
• Symbol design and modification rules: Symbols shall be used as shown, but limited modifications (line width, corner rounding, fill) are permitted provided the essential graphical elements remain unchanged and easily discernible.
• Orientation and scaling: Symbols must be reproduced in the orientation shown unless allowed otherwise, and sized per IEC 80416-1 so operators can readily perceive them.
• Colour convention for illuminated displays:
  • Red = failure/urgent attention
  • Yellow/amber = condition outside normal limits
  • Green = normal operating condition
• Contrast and reproduction: Symbols should contrast well with backgrounds; if cast or embossed, they must remain distinguishable without reliance on colour. When reversed (white-on-black vs black-on-white), reversal must be applied to the entire symbol.
• Arrows and icon adaptation: Arrows follow ISO 80416-2 conventions; digital display icons should preserve the visual impression of the graphical symbol and follow ISO 80416-4 guidance.
• Development process: New symbols should be developed per ISO 3767-1 Annex A and be preceded by a search of ISO 7000/IEC 60417 to avoid duplication. Submissions must include a short description of the symbol’s intended function.

Practical applications and users

• Who uses ISO 3767-3:2016: equipment manufacturers, product designers, HMI/UI engineers, technical illustrators, safety and regulatory compliance teams, service manuals authors, and standards committees.
• Why it matters: Ensures consistent, language‑independent control labeling across markets; improves operator safety, usability and regulatory compliance; simplifies training and maintenance.
• Typical use cases: control panels on lawn tractors and riding mowers, instrument clusters, electronic display icons for reconfigurable HMIs, molded control surfaces and operator manuals.

Related standards

• ISO 3767 series (Parts 1, 2, 4, 5)
• ISO 7000 and IEC 60417 (registered symbols databases)
• IEC 80416 / ISO 80416 series (graphical symbol principles, arrows, digital icons)

Keywords: ISO 3767-3:2016, symbols for operator controls, powered lawn and garden equipment, graphical symbols, ISO 7000, IEC 60417, IEC 80416.