.^==*%&¶@#                                          #@¶&%*==^.
..^==*%&¶@                                          @¶&%*==^..
...^==*%&¶                                          ¶&%*==^...
....^==*%&                                          &%*==^....
.....^==*%                                          %*==^.....
......^==*                  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!         ..........
.........^                                          ^.........
........^=                                          =^........
.......^==                                          ==^.......
......^==*                                          *==^......
.....^==*%                                          %*==^.....
....^==*%&                                          &%*==^....