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ARPA Comes to the Web Browser

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.
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