TS ISO 3767-4

TS ISO 3767-4 is the standard that standardizes symbols used on operator controls and other displays for forestry machinery. In this type of equipment, symbols help operators recognize functions quickly and more consistently, especially when language, training background, and working conditions vary. The document focuses on the forestry-machinery symbol set and should be understood alongside ISO 3767-1 for common symbols, ISO 3767-2 for agricultural tractors and machinery, ISO 3767-3 for powered lawn and garden equipment, and ISO 3767-5 for manual portable forestry machines.

Why standardized symbols matter in forestry machinery

Forestry machinery often operates in demanding environments with vibration, dust, noise, and changing light conditions. In that context, graphic symbols are a practical control language: they reduce reliance on written labels and help the operator identify control functions, indicators, and machine status at a glance. In general technical terms, symbol standardization supports clearer human-machine communication and helps different makes of equipment present similar functions in a familiar visual form. TS ISO 3767-4 serves that purpose for forestry machinery.

How this part fits into the ISO 3767 family

This part is not a universal symbol catalogue for all agricultural and forestry equipment. It is the forestry-machinery part of the ISO 3767 series. The notes also point users to ISO 7000 and IEC 60417 as additional sources of internationally standardized symbols that may be relevant in this field. That broader context matters because many machine interfaces combine sector-specific symbols with widely recognized graphical signs, allowing controls and displays to be interpreted more consistently across equipment types.

• Graphical symbols for operator controls
• Symbols for other machine displays and indicators
• Forestry machinery as the specific application area
• Relationship to ISO 3767-1 for common symbols
• Additional symbol references in ISO 7000 and IEC 60417