US: GTFS-Flex: General Transit Feed Specification
Description: upper-layer standards required to implement dynamic, public, transit-related communicationsProfile Standards
| Level | Standard |
|---|---|
| Facilities | IETF RFC 4180 CSV Files |
| Facilities | IETF RFC 7159 JSON |
| Facilities | IETF RFC 9110 HTTP Semantics |
| Facilities | IETF RFC 9112 HTTP/1.1 |
| Facilities | ISO 21320-1 ZIP |
| ITS Application Entity | General Transit Feed Specification - Flex Extension |