..&.&&&&&.                                          ..&&.&.&.&
.&&..&&&&.                                          .&.&.&.&.&
..&.&.&&&.                                          .&.&.&.&.&
.&&.&..&&.                                          .&.&.&.&.&
..&.&.&.&.                                          .&.&.&.&.&
.&&.&.&.&.                  R41LS                   .&.&.&.&.&
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.&&.&.&.&.                                          .&.&.&.&.&
..&.&.&.&. &&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&& .&.&.&.&.&
.&&.&.&.&.                                          .&.&.&.&.&
..&.&.&.&. &&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&& .&.&.&.&.&
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..&.&.&.&.                                          .&.&.&.&.&
.&&.&.&.&. 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. .&.&.&.&.&
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.&&.&.&.&.                 &&&&&&&&                 .&.&.&.&.&
..&.&.&.&.                                          .&.&.&.&.&
.&&.&.&.&. 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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