EU Tachograph Domain Knowledge

This skill provides the domain expertise required to work with EU Tachograph files (Driver Card & Vehicle Unit).

Core Concepts

• Regulation First: All implementation must derive directly from EU regulations (Data Dictionary).
• Binary Fidelity: Support perfect round-trip parsing/marshalling (byte-for-byte exactness).
• Type Safety: Use specific types for specific generations/formats.

Workflows

1. Card File Structure (TLV)

• Architecture: See card_structure.md for TLV, DF/EF structure, and signature handling.
• Pattern: Use a "Two-Pass" parsing strategy (Raw TLV -> Semantic Structure).

2. Regulation & ASN.1

• Regulation: Consult regulation.md to locate specific chapters (Data Dictionary is critical).
• Definitions: Use ASN.1 definitions from the regulation as the source of truth for all data types.