Clarification on derailer @type

derailerIS@type doubleDerailer: two derail devices installed on two rails singleDerailer: one derail device installed on one rail

It shall be clearly described, whether the "doubleDerailer" is blocking two rails of the same track or two adjacent tracks at once. The variant blocking two tracks at once has two derail devices mechanically coupled and operated by one switch motor.

Links

• Forum discussion:
  • Torben Brand, 04.07.2024: https://www.railml.org/forum/index.php?t=msg&th=873&goto=3265&#msg_3265
• Git issues:
  • #553 (closed)
• Wiki documentation:
  • IS:derailerIS: https://wiki3.railml.org/wiki/IS:derailerIS
  • IL:derailerIL: https://wiki3.railml.org/wiki/IL:derailerIL

Proposed solution railML 3.3

• derailerIS: introduce new attribute @constructionType (type of derailer from infrastructure/construction perspective) with values "singleCatchPoints" (Deflects vehicles in a similar manner as a <switch>, but with only a single tongue, in the rail through which the flanges have to pass.), "doubleCatchPoints" (Deflects vehicles in the same manner as a <switch>, with two tongues, one on each rail.) and "blockDerail" (A block or wedge that fits over the rail. It will lift the flange of the wheel over to the outside of the rail.)
• derailerIS: deprecate attribute @type
• derailerIL: introduce attribute @type (type of derailer from interlocking perspective) with values "singleDerailer" (a derail device protecting one track) and "doubleDerailer" (a derail device protecting two tracks)