Triple gauge edit
Examples edit
Track centres edit
Africa edit
Africa edit
1 and 3 ft 6 in (1,067 mm) gauges are too close to allow three-rail dual gauge. | 1 and 3 ft 6 in (1,067 mm) gauges can be used together, with four-rail dual gauge - note the third (useless) 1267 mm gauge. | 1 and 3 ft 6 in (1,067 mm) gauges can be used together with four-rail dual gauge, with bonus 1435 mm standard gauge. |
Africa is particularly affected by gauge problems, where railways of different gauges in adjacent countries meet.
Gauge rationalisation in Africa is facilitated since four-rail dual gauge of 1 and 3 ft 6 in (1,067 mm) contains a hidden gauge, which can be made to be standard gauge 1435. The four-rail system reuses and doubles the effective strength of the old light rails, which might otherwise have only a low value reuse as fenceposts.
Standard or Metre edit
Spain edit
Piggyback edit
Here.
File:Piggyback by Trainload2.jpg
File:Piggyback by Trainload.jpg
Well