.&&&.&&&.&                                          &.&&......
.&.&.&.&.&                                          ..&&&.....
.........&                                          ..&.&&....
..........                                          &...&&&...
..........                                          &&..&.&&..
..........                   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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...&&&....                                          ..........