Is 15% Window Tint Legal in Switzerland After the 2026 Law Changes?

No. Swiss road traffic regulations, enforced by the Federal Roads Office (FEDRO) and cantonal authorities, prohibit window tints below 30% light transmittance for front side and rear windows. A 15% tint fails this threshold, rendering it illegal unless medically exempted under strict cantonal approval.

Key Regulations for 15% Window Tint in Switzerland

  • Light Transmittance Minimum: Front side and rear windows must allow ≥30% visible light, per Verordnung über die technischen Anforderungen an Strassenfahrzeuge (VTS) Art. 25.1. Below this, tints are non-compliant unless authorized by cantonal health authorities.
  • Medical Exemptions: Cantonal medical boards (e.g., Gesundheitsdirektion Zürich) may grant exceptions for conditions like photodermatitis, but documentation and prior approval are mandatory. Unauthorized tints risk fines up to CHF 100 and mandatory removal.
  • Enforcement & Testing: Police and cantonal traffic inspectors use portable light transmittance meters (e.g., BOSCH GLM 100 C) during roadside checks. Vehicles with non-compliant tints face immediate rectification orders or vehicle impoundment.

Post-2026, FEDRO plans stricter digital compliance tracking via vehicle registration databases, integrating tint verification with annual technical inspections (Motorfahrzeugkontrolle). Non-compliant vehicles may fail inspection, blocking renewal of license plates.