Movable bridge

Description

There are bridges (overcrossings), which do not provide enough height for ships to pass underneath. They are therefore temporarily moved out of the way of the ships. The normal position of a bascule bridge is "closed", i.e. passable by trains. This position needs to be supervised by the interlocking system. However, the steering control of the bridge itself is outside of the interlocking.

Links

• forum discussion:
  • Jörg von Lingen, 06.12.2020: [https://www.railml.org/forum/index.php?t=msg&th=781&start=0&]
• Trac tickets
  • #449 (closed)
• Wiki documentation
  • IS:overCrossing: [https://wiki3.railml.org/wiki/IS:overCrossing]
  • IS:underCrossing: [https://wiki3.railml.org/wiki/IS:underCrossing]

Proposed solution railML 3.2

Required modifications in <interlocking>

• inherit class LogicalDevice
• <refersTo> will be to the undercrossing in IS
• technicalOpenTime, technicalClosingTime
• typicalNonPassableTime

Required modifications in <infrastructure>

The enumeration attribute @constructionType in element <*Crossing> shall be extended with new value "basculeBridge" or "movableBridge" or "movableUnderCrossing".