# Commission Implementing Regulation (EU) 2019/838 of 20 February 2019 on technical specifications for vessel tracking and tracing systems and repealing Regulation (EC) No 415/2007, Division 2.3.3.1: Bridge planning, medium-term

Extent: E+W+S+N.I.

The bridge planning process on medium term is dealing with the optimisation of the traffic flow in such a way that the bridges are opened in time for passing of vessels (green wave). The planning horizon varies between 15 minutes to two hours. The timeframe depends on the local situation.
ETA and position information shall be available on request, or such information shall be exchanged as soon as the deviation between the updated ETA and the original ETA exceeds a pre-defined value set by the competent authority. All other information shall be available once at the first contact or on request. RTA is the response on an ETA report or may be sent from a bridge to propose a passage time.

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Source: https://www.legislation.gov.uk/eur/2019/838/annex/division/2/division/2.3/division/2.3.3/division/2.3.3.1 (the official version)
Page: https://openlegislation.uk/eu-regulation-2019-838/annex/division-2/division-2.3/division-2.3.3/division-2.3.3.1
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.