TPEG2-TFP, Traffic Flow & Prediction
TPEG2 Traffic Flow & Prediction as published on the Czech road network.
| Identifier | x-format:cz-ndic_tpeg2-tfp-v0.1 |
| Family | TPEG2 (ISO 21219-1:2023) |
| Application | TFP, Traffic Flow & Prediction (ISO 21219-18:2019) |
| Encoding | XML |
| Status | Pilot |
What it carries
TPEG2-TFP describes traffic flow on the road network: quantitative state, not narrative events. Per monitored segment it can carry:
- level of service (LOS), indicating the current traffic flow state;
- average vehicle speed;
- free-flow travel time;
- delay relative to free-flow conditions;
- data quality indicator;
- traffic information broken down by vehicle class: all vehicles, passenger cars, or lorries.
TFP and TEC complement each other. TEC tells you that there's an incident with a 30-minute delay; TFP tells you the actual measured traffic conditions on this stretch right now.
Feeds
TPEG2-TFP is published as two complementary feeds: a static catalogue of predefined locations and a dynamic stream of live measurements referencing them. Each is a separate source with its own endpoint and identifier; follow the links for update cadences and how the two relate.
Location referencing
Flow segments are anchored using TPEG2's supported location referencing methods:
- TMC: for compatibility with existing client maps;
- OpenLR: for map-independent referencing of arbitrary segments.
Where to get the spec
The FSP repository contains FORMAT.yaml, the entry XSD, and samples/.
Let us know about any XSD, live-feed, or sample mismatch.
See also
- Protocol, how TFP messages are delivered.
- TPEG2-TEC, the companion event format.
- What is TPEG, the primer.