2 .NA Railroad "How railroads work"
4 Trains are land units with capability \*Qtrain\*U. They can't be
5 loaded on land units, but they can be loaded on ships, subject to the
6 usual restrictions for non-light and heavy land units.
8 Unlike other units, trains can enter a sector only if it has
9 (operational) railroad track.
11 If option RAILWAYS is disabled, a sector has railroad track as long as
12 its rail infrastructure efficiency is non-zero. Train mobility cost
13 depends on rail infrastructure efficiency (see \*Qinfo Mobility\*U).
14 Spy and satellite reports show approximate rail infrastructure
15 efficiency in column \*Qrl eff\*U.
17 If option RAILWAYS is enabled, all highway-like sectors are railways,
18 and the track is operational as long as the sector is at least 5%
19 efficient. A sector is highway-like if its mobility cost at 100% is
20 zero (column mob cost in \*Qshow sect s\*u). Operational railways
21 additionally extend track into adjacent sectors that are at least 60%
22 efficient. Sector selector track gives the number of operational
23 railways within one sector range. Spy and satellite reports show the
24 presence of track in column \*Qrl eff\*U. To visualize your railway
25 network, try \*Qsect # ?track#0\*U.