Rather than reinventing EMC, IEC 60571 references IEC 62236-3-2 (or EN 50121-3-2). Key limits:
Note: If your target market is Europe, EN 50155 may be the required specification. For many other regions (Asia, Middle East, South America), IEC 60571 is the direct reference. Iec 60571.pdf
Many rail operators require independent third-party certification (e.g., from an ISO/IEC 17025 lab) before accepting equipment on their fleet. Rather than reinventing EMC, IEC 60571 references IEC
The standard defines classes of environmental parameters: Rather than reinventing EMC