@,,,,,,,,, @@@@,,,,,@
,,@@@@@@@@ @@@,,@@@,,
@,,@@@@@@@ @@,,,,@,,@
,,,,@@@@@@ ,,,@@,,,,,
@@@,,@@@@@ @@,,,,@@@@
@@,,,,@@@@ rails @,,@@,,@@@
@,,@@,,@@@ ,,,,,,,,@@
,,,,,,,,@@ @@@@@@@,,@
,@@@@@@,,@ @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ @@@@@@,,,,
,,@@@@,,,, ,@@@@,,@@@
,,,@@,,@@, @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ ,,@@,,,,@,
@@,,,,,,,, @,,,,@@,,,
,,,@@@@@@, ,,@@,,,,@,
@@,,@@@@,, trains are so constructed that they ,,,,,@@,,,
,,,,,@@,,@ have to follow a set path. this path is @@@@,,,,@,
@@@@,,,,,, called a "railway", which is comprised ,@@,,@@,,,
,@@,,@@@@@ of two metal rails, hence its nickname. ,,,,,,,,@,
,,,,,,@@@@ ,@@@@@@,,,
@@@@@,,@@@ because the low friction between the ,,@@@@,,@@
@@@@,,,,@@ wheels of the train and the rail metal, @,,@@,,,,@
@@@,,@@,,@ there are limits for how acute a curve ,,,,,,@@,,
,@,,,,,,,, can be, and even more so for how much @@@@@,,,,,
,,,@@@@@@, the ground under the rails can be @@@@,,@@@@
,@,,@@@@,, sloped. thus a railway is often not led ,@@,,,,@@,
,,,,,@@,,@ on top of hills, rather through them in ,,,,@@,,,,
@@@@,,,,,, tunnels (if they are large), or ,@@,,,,@@@
@@@,,@@@@@ artificial chasms. ,,,,@@,,@@
@@,,,,@@@@ ,@@,,,,,,@
@,,@@,,@@, there will be trees on the side of the ,,,,@@@@,,
,,,,,,,,,, rails, but not too close, or they will ,@@,,@@,,,
@@@@@@@@@@ be cut down by the railway janitors. ,,,,,,,,@@
@@@@@@@@@@ there will be plains, and bodies of @@@@@@@,,@
@@@@@@@@@, water. @@@@@@,,,,
,@@@@@@@,, @@@@@,,@@,
,,@@@@@,,@ trains go by day and by night. along @@@@,,,,,,
@,,@@@,,,, the way, there is information @@@,,@@@@@
,,,,@,,@@@ scattered, often put on top of poles, @@,,,,@@@@
,@@,,,,,@@ to be interpreted by the train drivers. ,,,@@,,@@,
,,,,@@@,,, different parts of the railway have @@,,,,,,,,
@@@,,@,,@@ different speed limits. @,,@@@@@@@
@@,,,,,,,@ ,,,,@@@@@@
@,,@@@@@,, sometimes, trains have to stop and wait ,@@,,@@@@@
,,,,@@@,,@ for something to happen, far away. this ,,,,,,@@@@
,@@,,@,,,, is signaled by red or green lights. @@@@@,,@@,
,,,,,,,@@@ @@@@,,,,,,
@@@@@@,,@@ @@@@@@@@ @@@,,@@@@@
@@@@@,,,,, @@,,,,@@@@
@@@@,,@@@@ many people follow the rails by foot. ,,,@@,,@@@
@@@,,,,@@@ often this proves to be the shorter @@,,,,,,@@
@@,,@@,,@@ path between two points. however this ,,,@@@@,,@
@,,,,,,,,, is frowned upon, and very impolite @@,,@@,,,,
,,@@@@@@@@ toward the train drivers! @,,,,,,@@,
@,,@@@@@@, ,,@@@@,,,,
,,,,@@@@,, @,,@@,,@@,
@@@,,@@,,, ,,,,,,,,,,
,@,,,,,,@@ @@@@@@@@@,
,,,@@@@,,@ @@@@@@@@,,
@@,,@@,,,, ,@@@@@@,,@