...««//**@                                          @**//««...
....«%%&&@                                          @&&%%«....
.~«/%*&@##                                          ##@&*%/«~.
.~«/%*&@##                                          ##@&*%/«~.
....~~~/*@                                          @*/~~~....
...~«/**&#                   R41LS                  #&**/«~...
.~«/%*&@@#                                          #@@&*%/«~.
.~«/%*&@##                                          ##@&*%/«~.
.~«/%*&### &&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&& ###&*%/«~.
.~«/%*&@##                                          ##@&*%/«~.
.~«/%*&@## &&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&& ##@&*%/«~.
....~«%*&@                                          @&*%«~....
.....«%&&#                                          #&&%«.....
.~«/%*&&&@ TR41NS  4R3  SO  CONSTRUCT3D  TH4T  TH3Y @&&&*%/«~.
.~«/%*&@## H4V3 TO FOLLOW 4 S3T P4TH. TH1S P4TH  1S ##@&*%/«~.
......«%%& C4LL3D  4 "R41LWAY", WH1CH  1S COMPR1S3D &%%«......
.~«//%%*&@ OF TWO M3T4L  R41LS, H3NCE 1TS N1CKN4M3. @&*%%//«~.
.~«/%*&&&#                                          #&&&*%/«~.
.~«/%*&@@@ B3C4USE  TH3  LOW  FR1CTION  B3TWEEN TH3 @@@&*%/«~.
.~«/%*&@## WH3ELS OF TH3 TR41N  4ND TH3 R41L M3T4L, ##@&*%/«~.
.~««/%***@ TH3RE  4R3 L1MITS FOR HOW  4CUT3 4 CURV3 @***%/««~.
.~«/%*&&&@ C4N B3, 4ND 3VEN MOR3  SO FOR  HOW  MUCH @&&&*%/«~.
.~«/%%*&&@ TH3  GROUND  UND3R  TH3  R41LS   C4N  B3 @&&*%%/«~.
.~«/%*&@## SLOP3D. THUS 4 R41LWAY 1S OFT3N NOT  L3D ##@&*%/«~.
...««//**& ON TOP OF  H1LLS, R4TH3R THROUGH TH3M 1N &**//««...
....~/***& TUNN3LS  (1F   TH3Y   4R3   L4RG3),   OR &***/~....
.~«/%*&@##            4RT1FICIAL CH4SMS.            ##@&*%/«~.
.~«/%**&&&                                          &&&**%/«~.
...~//*&&# TH3RE  W1LL B3 TR3ES ON TH3 S1D3  OF TH3 #&&*//~...
.....«/**& R41LS, BUT NOT  TOO CLOS3, OR TH3Y  W1LL &**/«.....
.~«/%*&### B3  CUT  DOWN  BY TH3  R41LWAY J4N1TORS. ###&*%/«~.
....~~/**& TH3RE  W1LL  B3  PL41NS,  4ND BOD13S  OF &**/~~....
.~«/%*&@##                  W4T3R.                  ##@&*%/«~.
.....«%*@@                                          @@*%«.....
.~«/%*&@## TR41NS  GO  BY  D4Y 4ND  BY N1GHT. 4LONG ##@&*%/«~.
.~«/%*&@##       TH3 W4Y, TH3RE 1S 1NFORM4TION      ##@&*%/«~.
.~«/%*&@## SC4TT3RED,  OFT3N PUT  ON  TOP OF POL3S, ##@&*%/«~.
.~«/%*&@## TO  B3 1NT3RPRETED BY TH3 TR41N DR1V3RS. ##@&*%/«~.
......~/*& D1FF3RENT  P4RTS  OF  TH3  R41LWAY  H4V3 &*/~......
.~«««/**@#          D1FF3RENT SP3ED L1MITS.         #@**/«««~.
.~«/%*&@##                                          ##@&*%/«~.
.~«/%*&@## SOM3T1MES, TR41NS H4V3  TO STOP 4ND W41T ##@&*%/«~.
.~«/%*&@## FOR SOM3TH1NG TO H4PP3N, F4R 4WAY.  TH1S ##@&*%/«~.
.~«/%*&@## 1S  S1GN4L3D  BY R3D  OR  GR3EN  L1GHTS. ##@&*%/«~.
..~«/%**&@                                          @&**%/«~..
.~«/*&@###                 &&&&&&&&                 ###@&*/«~.
.~«/%*&@##                                          ##@&*%/«~.
....~///%& M4NY  P3OPLE FOLLOW TH3  R41LS  BY FOOT. &%///~....
.~«/%*&@## OFT3N  TH1S PROV3S  TO  B3  TH3  SHORT3R ##@&*%/«~.
.~«/%*@### P4TH B3TWEEN  TWO  PO1NTS. HOW3VER  TH1S ###@*%/«~.
.....~/*&@ 1S  FROWN3D  UPON,  4ND  V3RY   1MPOLIT3 @&*/~.....
.~~~«/**&@        TOW4RD TH3 TR41N DR1V3RS!         @&**/«~~~.
.~«/%*&@##                                          ##@&*%/«~.
.~«/%*&@##                                          ##@&*%/«~.
......~/%&                                          &%/~......
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.~«/%*&@##                                          ##@&*%/«~.