ミニマップの路線図の表示にナローゲージが考慮されていず、航路と同じく点線で描画される。
In network diagram on minimap, narrowgauge_wt is connected by a dotted line as same as water_wt.
Maybe narrowgauge_wt is missing in code or ... ?
switch( type ) {
case track_wt:
case monorail_wt:
case maglev_wt:
thickness = 5;
break;
case road_wt:
thickness = 2;
break;
case tram_wt:
thickness = 3;
break;
default:
thickness = 3;
dotted = true;
}