TS 2558

TS 2558 is a graphic-symbol standard for road vehicles, covering the symbols used for controls, indicators, and tell-tales. In vehicle cabins, drivers need to recognise functions quickly and consistently, and this is exactly the kind of visual language this standard addresses.

The standard covers the symbols used for controls, indicators and tell-tales in road vehicles. This distinction matters: control symbols identify an action or selector, indicator symbols communicate system status, and tell-tales are the visual warnings or reminders that draw the driver’s attention to a condition or fault. Using standardised symbols helps replace longer text labels on dashboards and control panels with concise, readily recognisable graphics.

Why these symbols matter in vehicle interfaces

In general technical terms, symbol standardisation supports legibility, consistency and rapid recognition. A dashboard symbol should be understandable across languages and markets, which is why graphic conventions are so important in automotive design. Standards in this area help align the visual interface of a vehicle with common expectations for usability and international compatibility. The reference to ISO 2575-2:1975 indicates a close link to an internationally established symbol system.

This listing represents a withdrawn TSE edition, but its technical subject remains the standardisation of symbolic representation for vehicle controls and warning information. Well-chosen symbols help integrate instruments, switches and warning functions into a coherent driver interface.