ARPA Comes to KlaipėdaTraffic.lt

CPA & TCPA collision prediction · ARPA-style logic

KlaipėdaTraffic.lt introduces an ARPA-style collision assessment mode, bringing real bridge and VTS logic into a public AIS environment.

What ARPA shows

Closest Point of Approach (CPA)
Time to CPA (TCPA)
Relative motion geometry
Continuous live updates

Why it matters

In dynamic port waters, tracks alone are not enough. ARPA reveals future risk — not just present position.

Disclaimer:
KlaipėdaTraffic.lt is an independent, non-official project. ARPA visualisations are AIS-based and provided for informational purposes only. Not for navigation.