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,,,,£££,,,                                          ,££,,,,,£,
,,,,£,££,,                                          ,£££,,,,,£
£,,,,,£££,                  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!        £££,,,,,,,
,£,,,£,,£,                                          £,££,,,,,,
,,£,,,£,,£                                          ,,£££,,,,,
,,,£,,,£,,                                          ,,£,££,,,,
,,,,£,,,£,                                          ,,,,£££,,,
,,,,,£,,,£                                          ,,,,£,££,,
,,,,,,£,,,                                          £,,,,,£££,