Icons with physical direction should not be mirrored

What it is

Physical-direction icon invariance means that graphics representing real space, object structure, or actual motion retain their orientation when interface writing direction changes. Road turns, hardware port locations, left and right hands, product silhouettes, and map bearings describe real objects. Mirroring them can turn a right-side connector into false left-side guidance.

Why it happens

Physical direction uses an object- or world-centered frame of reference; reading direction uses a logical text-flow frame. Both happen to occupy the screen's horizontal axis but do not share semantics. A geometric flip changes pixels without changing the represented world, creating factual errors. Asymmetric photographs, diagrams, and gestures are especially vulnerable because mirroring may also alter identity marks, embedded text, or bodily laterality.

Where it stops holding

The same arrow shape can use different frames by context: it may mean next step or movement east. Asset names and geometry alone cannot determine behavior. Abstract send, share, and exit symbols may follow platform convention rather than pure physical direction and need market-specific verification. A decorative photograph without text or laterality may survive flipping, but composition and cultural meaning still require review.

Applying it

• Record the semantic reference frame for directional assets: logical sequence, absolute bearing, object-relative direction, or platform convention.
• Exempt maps, hardware diagrams, product photographs, left/right body imagery, and images containing text from automatic mirroring.
• When one shape serves several meanings, use separate components or metadata instead of asking a global RTL switch to infer intent.
• Validate against reality: have users connect the depicted port, select the indicated body side, or follow the route and confirm each graphic matches the object.

Related

• Same group: S1.02.1 Mirroring applies to layout and direction, not every graphic · S1.02.2 Icons expressing time and progress need mirroring · S1.02.4 Numbers and Latin-script runs remain left-to-right inline · S1.02.5 Motion and gesture directions must be mirrored together
• Adjacent: S3.02 Cultural taboos in icons, gestures, and imagery · K4.03 Spatial direction and device posture
• Search terms: physical direction icon · RTL icon exception · spatial reference frame